Acid Tunneling article included in 2008 BJ Services' Engineering Review Magazine.

1. EngineeringNewsEngineeringNews
Executive Summary, Spring 2008
(For full-text articles, open the Engineering News database in Lotus Notes, or log onto
PowerCenter and search for "Engineering News," then scroll to Vol. 19, No. 1, Spring 2008.)
Message from Technology: The Tomball Technology Center begins working with some
important new high-tech tools, and BJ Services wins some more technology awards.
BJ in Print: A listing of the 12 trade magazine and technical journal articles BJ published from
February through April 2008 (see page 5).
SPE Paper Summaries: A brief synopsis of each of the 13 SPE papers BJ authors presented
between January and April 2008 (see page 6).
Articles Summaries by Technology:
Cementing:
BJ enters offshore cementing market
in New Zealand: Platform jacket
supports and wellbore conductors are
among the first cement jobs for BJ
Services in the Kupe Field offshore New
Zealand. (Dallas Langley, New Zealand)
Cement plug design optimization
using MPA-1: A new pozzolan additive
creates cement with very high
compressive strength, ideal for sidetrack
plugs. (Soyel Cotera & Omar La Torr,
Peru)
Financial and technical assessment of
pozzolanic vs. conventional slurries:
To improve profits on multi-year
cementing contracts that freeze service
company prices, conventional
lightweight slurries can be used instead
of pozzolanic slurries in many cases.
(Marbella Rengifo & Fabián Zarate,
Mexico)
Cement simulation software saves
well after rig problem: After a drilling
rig nearly collapses during casing
cementing, a simulator is used to design
a means of finishing the annulus cement
job through perforations. (Fabián Zarate
& Marbella Rengifo, Mexico)
Comparing gas control additives: BA-
90 is to be the new standard gas control
additive in Mexico after bond log
analysis suggests that it provides the
same performance as older additives,
but at 15 to 32% lower cost. (Marbella
Rengifo & Fabián Zarate, Mexico)

2. Eliminating gas migration in
cemented annuli in Mexico: Although
annular gas migration is not typically a
problem in newer wells, it can be
difficult to manage when plugging and
abandoning older wells. (Marbella
Rengifo & Fabián Zarate, Mexico)
Improving slurry rheology: ASA-
301L additive is used to improve
rheology and free water, and BA-58L to
improve slurry yield point and control
gas migration for slurries for casing and
liner jobs. (Andri Ansari, Gabon)
Seahawk™ unit and new retarder
used in India: With a Seahawk unit on
a new jackup rig, cementers in India use
a new synthetic retarder to improve
consistency and predictability. (Nilesh
Shetty, India)
LiteSet™ 6 grouting slurries for
FPSO anchoring stakes offshore
Brazil: LW-6 additive is the enabling
technology for more than 8,000 bbl of
13-ppg slurry pumped in 13 conductor
stakes. (Ricardo Garzon, Macaé, Brazil)
New SaltSet™ cement system: A salt-
saturated cement system used in a Gulf
of Mexico shelf well is expandable, to
achieve good bonds, and provides gas
migration control. (Bryan Simmons,
New Orleans)
First cement job in the UK sector
using SL-1: Liquid silica enables high-
temperature cementing offshore,
simplifying logistics and cementing
operations. (Chris Howarth, Aberdeen)
Heavyweight cement slurry in
Algeria: W-10 weighting agent allows
the development of a 20.44-ppg slurry to
cover a very high-pressured zone.
(Ahmed Boumakel, Algeria)
Chemical Services:
Removing hydrate plugs in deepwater
wells: Capillary tubing enables quick
delivery of chemicals directly to
downhole hydrate plugs, saving two
Gulf of Mexico operators considerable
chemical costs and rig time. (Mark
Embrey, Kilgore)
Treating liquid loading using
FoamXpert™ software: In a mature
Indonesian gas field, software helps
determine the candidate wells most
likely to respond to deliquification
surfactants pumped downhole via
capillary string. (Mark Embrey, Kilgore)
Completions:
HPHT completion solutions in Louisiana waters: Fluid and tool choices for four wells are
complicated by high-chrome production tubing and bottomhole temperatures up to 375°F
with bottomhole pressures up to 21,875 psi. (Ben Mitchell and David Robinson, Houston)
Nitrogen:
Continuous nitrogen pumping saves customer money: BJ Services provides a nitrogen
generator unit that pumps continuously for 543 hours over 26 days, allowing a customer to
continue oil production from three gas-lifted wells during compressor maintenance.
(Alexandre Seixas, Catu, Brazil)

3. Coiled Tubing:
Application of SC-Resin for sand
consolidation in Indonesia: Pumping a
sand control treatment through coiled
tubing with nitrogen eliminates near-
wellbore sand production and plugging
problems in a Sumatra well, restoring
production without the expense of a
workover rig. (Vendro Munajad,
Jakarta)
Circa™ software compares cleaning
options: Proprietary coiled tubing
simulation software helps engineers
choose the optimum solution for
removing bauxite from a well after a
fracture stimulation. (Robledo Barros,
Mossoró, Brazil)
Temporary gelling plug and well
stimulation through CT: To add a new
production zone to a well, BJ Services
pumps a temporary gelling plug to cover
the existing perforations, an energized
mud acid treatment to stimulate the new
zone, an acid slug to dissolve the plug,
and finally a gas lift operation to recover
the spent acid and restore production.
(Diego Marozzini, Neuquén, Argentina)
Removing a protection sleeve using
CT: In two weather-plagued campaigns,
BJ Services crews make 14 milling and
three fishing runs, and one long gas
lifting operation over 77 days, trying to
restore production from a well with a
failed safety valve. (Rafal Fryzowicz,
Emmen, The Netherlands)
Restoring production with coiled
tubing technologies: To remove scale,
formation fines and debris from five oil
wells offshore Brazil, BJ designs a
three-step solution, including one using
a metal-metal motor. (Victor Almeida &
Julio Pinto, Macaé, Brazil)
Acid tunneling in Kuwait:
StimTunnel™ operations in West
Kuwait create 14 tunnels in two wells
despite formation issues and wellbore
irregularities. (Abrar Bouarki, Kuwait)
Matrix Sandstone Acid™ stimulation
treatment in Algeria: Three water
injection wells see significant injection
rate improvements after foam-diverted
matrix acidizing through coiled tubing.
(Mohamed El-Sedawy & Abdelaziz
Hamloui, Algeria)
Stimulation:
Fracturing on the prairies: A major
step change in the exploitation of the
vast Williston basin involves the use of
horizontal drilling and "toe-to-heel"
multistage fracturing techniques with
mechanical isolation technology. (B.A.
(Brad) Rieb & Jenny Hogan, Calgary)
Lightning™ gel frac fluid used in
Argentina: Changing fracturing fluids
improves post-stimulation skin in
several Argentine wells. (Roberto
Sentinelli & Daniel Aranda, Argentina)
Sintered bauxite choice saves money
without compromising performance:
Comparing specifications and costs of
competing sintered bauxite proppants
leads to a decision that should save a
major customer $150,000 this year --
without compromising proppant
conductivity and permeability. (Juan
Coronado, Midland)

4. Hybrid fracs improve well economics
in western Siberia: Low-rate, hybrid
fracture treatments have become the
standard for stimulating the Ryabchik
formation to achieve economic
production without high water cuts.
(Alex Batrashkin & Sergey Kotov,
Tomball)
Upward convective proppant
transport and conformance
fracturing: LiteProp™ ultralightweight
proppants provide a means of
minimizing water production after a
fracture treatment by controlling
proppant transport and convection.
(Ricardo Melo, Brazil)
Multizone hydraulic fracturing with
the "Perfpack" method: Nylon balls
pack the perforations that are taking the
most fluids during a fracture
stimulation, diverting fluids to less
permeable areas and allowing allow
multizone stimulation. (Ronald De la
Cruz, Peru)
New bauxite proppant aids in job
placement: Angular shape and high
strength help a new bauxite product
perform as a lead-in proppant during a
frac to reduce perforation friction and
tortuosity without generating fines.
(Wayne Scott, Corpus Christi, Texas)
BJ Sandstone Acid™ system in high-
permeability formation: A matrix acid
stimulation treatment minimizes the
possibility of breaching an unconfined
gas zone above a desired high-
permeability oil target -- with good
production results. (Guillermo Katzer &
Miguel Castañeda, Argentina)
SpectraStar™ fluid treatments in
southern Argentina: A water-based
fracturing fluid replaces a methanol-
based fluid, saving the customer money
and minimizing location risks without
sacrificing performance. (Raúl Mera,
Argentina)
Two-phase fluid effects on step-down
test results: Repeating the step-down
test saves money for an operator who
considered re-perforating because of
deceptively high perforation and near-
wellbore friction results. (Carlos Patino,
Mexico)
Inflo-250 surfactant, a success in West
Texas: On 17 jobs to date, flowback
performance has been unaffected by
switching to a new, less costly
surfactant, saving a customer about
$10,000. (Patrick B. Haley, Midland)
Improving production after workover
fluid damage: Compatibility testing of
workover and formation fluids finds that
a simple recipe change can improve
post-workover production results.
(Manuel Retamoso Rojas & Juan
Mendoza, Peru)
BJ Sandstone Acid™ System
stimulates a formation with
calcareous cement: To avoid
deconsolidating a productive sandstone
formation, BJ Services pumps an HCl-
free matrix acid stimulation treatment.
(Alberto Castro, Argentina)
Linear gel vs. crosslinked systems for
the Blinebry formation: Substituting a
crosslinked frac fluid system for a linear
gel saves a customer money and reduces
premature screenouts. (Mike Beggs,
Artesia, N.M.)

5. Articles Summaries by Application:
Deepwater
LiteSet™ 6 grouting slurries for
FPSO anchoring stakes offshore
Brazil: LW-6 additive is the enabling
technology for more than 8,000 bbl of
13-ppg slurry pumped in 13 conductor
stakes. (Ricardo Garzon, Macaé, Brazil)
New SaltSet™ cement system: A salt-
saturated cement system used in a Gulf
of Mexico shelf well is expandable, to
achieve good bonds, and provides gas
migration control. (Bryan Simmons,
New Orleans)
Removing hydrate plugs in deepwater
wells: Capillary tubing enables quick
delivery of chemicals directly to
downhole hydrate plugs, saving two
Gulf of Mexico operators considerable
chemical costs and rig time. (Mark
Embrey, Kilgore)
Flow Assurance
Removing hydrate plugs in deepwater
wells: Capillary tubing enables quick
delivery of chemicals directly to
downhole hydrate plugs, saving two
Gulf of Mexico operators considerable
chemical costs and rig time. (Mark
Embrey, Kilgore)
Treating liquid loading using
FoamXpert™ software: In a mature
Indonesian gas field, software helps
determine the candidate wells most
likely to respond to deliquification
surfactants pumped downhole via
capillary string. (Mark Embrey, Kilgore)
Application of SC-Resin for sand
consolidation in Indonesia: Pumping a
sand control treatment through coiled
tubing with nitrogen eliminates near-
wellbore sand production and plugging
problems in a Sumatra well, restoring
production without the expense of a
workover rig. (Vendro Munajad,
Jakarta)
Circa™ software compares cleaning
options: Proprietary coiled tubing
simulation software helps engineers
choose the optimum solution for
removing bauxite from a well after a
fracture stimulation. (Robledo Barros,
Mossoró, Brazil)
Restoring production with coiled
tubing technologies: To remove scale,
formation fines and debris from five oil
wells offshore Brazil, BJ designs a
three-step solution, including one using
a metal-metal motor. (Victor Almeida &
Julio Pinto, Macaé, Brazil)
Removing a protection sleeve using
CT: In two weather-plagued campaigns,
BJ Services crews make 14 milling and
three fishing runs, and one long gas
lifting operation over 77 days, trying to
restore production from a well with a
failed safety valve. (Rafal Fryzowicz,
Emmen, The Netherlands)
Unconventional Resources
Fracturing on the prairies: A major step change in the exploitation of the vast Williston
basin involves the use of horizontal drilling and "toe-to-heel" multistage fracturing techniques
with mechanical isolation technology. (B.A. (Brad) Rieb & Jenny Hogan, Calgary)

6. HPHT
HPHT completion solutions in
Louisiana waters: Fluid and tool
choices for four wells are complicated
by high-chrome production tubing and
bottomhole temperatures up to 375
degrees F with bottomhole pressures up
to 21,875 psi. (Ben Mitchell and David
Robinson, Houston)
New bauxite proppant aids in job
placement: Angular shape and high
strength help a new bauxite product
perform as a lead-in proppant during a
frac to reduce perforation friction and
tortuosity without generating fines.
(Wayne Scott, Corpus Christi, Texas)
Sintered bauxite choice saves money
without compromising performance:
Comparing specifications and costs of
competing sintered bauxite proppants
leads to a decision that should save a
major customer $150,000 this year --
without compromising proppant
conductivity and permeability. (Juan
Coronado, Midland)
First cement job in the UK sector
using SL-1: Liquid silica enables high-
temperature cementing offshore,
simplifying logistics and cementing
operations. (Chris Howarth, Aberdeen)
Multizone Completions
Acid tunneling in Kuwait:
StimTunnel™ operations in West
Kuwait create 14 tunnels in two wells
despite formation issues and wellbore
irregularities. (Abrar Bouarki, Kuwait)
Matrix Sandstone Acid™ stimulation
treatment in Algeria: Three water
injection wells see significant injection
rate improvements after foam-diverted
matrix acidizing through coiled tubing.
(Mohamed El-Sedawy & Abdelaziz
Hamloui, Algeria)
Temporary gelling plug and well
stimulation through CT: To add a new
production zone to a well, BJ Services
pumps a temporary gelling plug to cover
the existing perforations, an energized
mud acid treatment to stimulate the new
zone, an acid slug to dissolve the plug,
and finally a gas lift operation to recover
the spent acid and restore production.
(Diego Marozzini, Neuquén, Argentina)
Linear gel vs. crosslinked systems for
the Blinebry formation: Substituting a
crosslinked frac fluid system for a linear
gel saves a customer money and reduces
premature screenouts. (Mike Beggs,
Artesia, N.M.)
Multizone hydraulic fracturing with
the "Perfpack" method: Nylon balls
pack the perforations that are taking the
most fluids during a fracture
stimulation, diverting fluids to less
permeable areas and allowing allow
multizone stimulation. (Ronald De la
Cruz, Peru)

7. Mature Fields
Treating liquid loading using
FoamXpert™ software: In a mature
Indonesian gas field, software helps
determine the candidate wells most
likely to respond to deliquification
surfactants pumped downhole via
capillary string. (Mark Embrey, Kilgore)
Restoring production with coiled
tubing technologies: To remove scale,
formation fines and debris from five oil
wells offshore Brazil, BJ designs a
three-step solution, including one using
a metal-metal motor. (Victor Almeida &
Julio Pinto, Macaé, Brazil)
Removing a protection sleeve using
CT: In two weather-plagued campaigns,
BJ Services crews make 14 milling and
three fishing runs, and one long gas
lifting operation over 77 days, trying to
restore production from a well with a
failed safety valve. (Rafal Fryzowicz,
Emmen, The Netherlands)
Acid tunneling in Kuwait:
StimTunnel™ operations in West
Kuwait create 14 tunnels in two wells
despite formation issues and wellbore
irregularities. (Abrar Bouarki, Kuwait)
Matrix Sandstone Acid™ stimulation
treatment in Algeria: Three water
injection wells see significant injection
rate improvements after foam-diverted
matrix acidizing through coiled tubing.
(Mohamed El-Sedawy & Abdelaziz
Hamloui, Algeria)
Temporary gelling plug and well
stimulation through CT: To add a new
production zone to a well, BJ Services
pumps a temporary gelling plug to cover
the existing perforations, an energized
mud acid treatment to stimulate the new
zone, an acid slug to dissolve the plug,
and finally a gas lift operation to recover
the spent acid and restore production.
(Diego Marozzini, Neuquén, Argentina)
Continuous nitrogen pumping saves
customer money: BJ Services provides
a nitrogen generator unit that pumps
continuously for 543 hours over 26
days, allowing a customer to continue
oil production from three gas-lifted
wells during compressor maintenance.
(Alexandre Seixas, Catu, Brazil)
Zonal Isolation
Fracturing on the prairies: A major
step change in the exploitation of the
vast Williston basin involves the use of
horizontal drilling and "toe-to-heel"
multistage fracturing techniques with
mechanical isolation technology. (B.A.
(Brad) Rieb & Jenny Hogan, Calgary)
BJ enters offshore cementing market
in New Zealand: Platform jacket
supports and wellbore conductors are
among the first cement jobs for BJ
Services in the Kupe Field offshore New
Zealand. (Dallas Langley, New Zealand)
Cement simulation software saves
well after rig problem: After a drilling
rig nearly collapsed during casing
cementing, a simulator is used to design
a means of finishing the annulus cement
job through perforations. (Fabián Zarate
& Marbella Rengifo, Mexico)
Comparing gas control additives: BA-
90 is to be the new standard gas control
additive in Mexico after bond log
analysis suggests that it provides the
same performance as older additives,
but at 15 to 32% lower cost. (Marbella
Rengifo & Fabián Zarate, Mexico)

8. Eliminating gas migration in
cemented annuli in Mexico: Although
annular gas migration is not typically a
problem in newer wells, it can be
difficult to manage when plugging and
abandoning older wells. (Marbella
Rengifo & Fabián Zarate, Mexico)
Financial and technical assessment of
pozzolanic vs. conventional slurries:
To improve profits on multi-year
cementing contracts that freeze service
company prices, conventional
lightweight slurries can be used instead
of pozzolanic slurries in many cases.
(Marbella Rengifo & Fabián Zarate,
Mexico)
First cement job in the UK sector
using SL-1: Liquid silica enables high-
temperature cementing offshore,
simplifying logistics and cementing
operations. (Chris Howarth, Aberdeen)
Heavyweight cement slurry in
Algeria: W-10 weighting agent allows
the development of a 20.44-ppg slurry to
cover a very high-pressured zone.
(Ahmed Boumakel, Algeria)
Improving slurry rheology: ASA-
301L additive is used to improve
rheology and free water, and BA-58L to
improve slurry yield point and control
gas migration for slurries for casing and
liner jobs. (Andri Ansari, Gabon)
LiteSet™ 6 grouting slurries for
FPSO anchoring stakes offshore
Brazil: LW-6 additive is the enabling
technology for more than 8,000 bbl of
13-ppg slurry pumped in 13 conductor
stakes. (Ricardo Garzon, Macaé, Brazil)
New SaltSet™ cement system: A salt-
saturated cement system used in a Gulf
of Mexico shelf well is expandable, to
achieve good bonds, and provides gas
migration control. (Bryan Simmons,
New Orleans)
Seahawk™ unit and new retarder
used in India: With a Seahawk unit on
a new jackup rig, cementers in India use
a new synthetic retarder to improve
consistency and predictability. (Nilesh
Shetty, India)
Production Enhancement
Fracturing on the prairies: A major
step change in the exploitation of the
vast Williston basin involves the use of
horizontal drilling and "toe-to-heel"
multistage fracturing techniques with
mechanical isolation technology. (B.A.
(Brad) Rieb & Jenny Hogan, Calgary)
Multizone hydraulic fracturing with
the "Perfpack" method: Nylon balls
pack the perforations that are taking the
most fluids during a fracture
stimulation, diverting fluids to less
permeable areas and allowing allow
multizone stimulation. (Ronald De la
Cruz, Peru)
Lightning™ gel frac fluid used in
Argentina: Changing fracturing fluids
improves post-stimulation skin in
several Argentine wells. (Roberto
Sentinelli & Daniel Aranda, Argentina)
Linear gel vs. crosslinked systems for
the Blinebry formation: Substituting a
crosslinked frac fluid system for a linear
gel saves a customer money and reduces
premature screenouts. (Mike Beggs,
Artesia, N.M.)
New bauxite proppant aids in job
placement: Angular shape and high
strength help a new bauxite product
perform as a lead-in proppant during a
frac to reduce perforation friction and
tortuosity without generating fines.
(Wayne Scott, Corpus Christi, Texas)

9. Sintered bauxite choice saves money
without compromising performance:
Comparing specifications and costs of
competing sintered bauxite proppants
leads to a decision that should save a
major customer $150,000 this year --
without compromising proppant
conductivity and permeability. (Juan
Coronado, Midland)
SpectraStar™ fluid treatments in
southern Argentina: A water-based
fracturing fluid replaces a methanol-
based fluid, saving the customer money
and minimizing location risks without
sacrificing performance. (Raúl Mera,
Argentina)
Two-phase fluid effects on step-down
test results: Repeating the step-down
test saves money for an operator who
considered re-perforating because of
deceptively high perforation and near-
wellbore friction results. (Carlos Patino,
Mexico)
Hybrid fracs improve well economics
in western Siberia: Low-rate, hybrid
fracture treatments have become the
standard for stimulating the Ryabchik
formation to achieve economic
production without high water cuts.
(Alex Batrashkin & Sergey Kotov,
Tomball)
Upward convective proppant
transport and conformance
fracturing: LiteProp™ ultralightweight
proppants provide a means of
minimizing water production after a
fracture treatment by controlling
proppant transport and convection.
(Ricardo Melo, Brazil)
Inflo-250 surfactant, a success in West
Texas: On 17 jobs to date, flowback
performance has been unaffected by
switching to a new, less costly
surfactant, saving a customer about
$10,000. (Patrick B. Haley, Midland)
Improving production after workover
fluid damage: Compatibility testing of
workover and formation fluids finds that
a simple recipe change can improve
post-workover production results.
(Manuel Retamoso Rojas & Juan
Mendoza, Peru)
BJ Sandstone Acid™ System
stimulates a formation with
calcareous cement: To avoid
deconsolidating a productive sandstone
formation, BJ Services pumps an HCl-
free matrix acid stimulation treatment.
(Alberto Castro, Argentina)
BJ Sandstone Acid™ system in high-
permeability formation: A matrix acid
stimulation treatment minimizes the
possibility of breaching an unconfined
gas zone above a desired high-
permeability oil target -- with good
production results. (Guillermo Katzer &
Miguel Castañeda, Argentina)
Acid tunneling in Kuwait:
StimTunnel™ operations in West
Kuwait create 14 tunnels in two wells
despite formation issues and wellbore
irregularities. (Abrar Bouarki, Kuwait)
Matrix Sandstone Acid™ stimulation
treatment in Algeria: Three water
injection wells see significant injection
rate improvements after foam-diverted
matrix acidizing through coiled tubing.
(Mohamed El-Sedawy & Abdelaziz
Hamloui, Algeria)
Temporary gelling plug and well
stimulation through CT: To add a new
production zone to a well, BJ Services
pumps a temporary gelling plug to cover
the existing perforations, an energized
mud acid treatment to stimulate the new
zone, an acid slug to dissolve the plug,
and finally a gas lift operation to recover
the spent acid and restore production.
(Diego Marozzini, Neuquén, Argentina)

10. BJ in Print
Recent articles in trade magazines and technical journals highlighting BJ technology, operations
and people:
February 2008
"Coiled Tubing 'Vacuum' Restores North Slope Wells," JPT (Jason Skufca, Houston)
"Fracture Acidizing Poised For New Role," American Oil & Gas Reporter (Leonard
Kalfayan, Tomball)
"Innovative technologies increase CT's capabilities," Offshore (Manfred Sach, Calgary)
"Diverting acid for better stimulation," Hart's E&P (John Chesson, Singapore; and Kay
Cawiezel and Carolyn Devine, Tomball)
"Unique approach to selective stimulation of carbonate reservoirs with multiple sets of
perforations and comingled production pays dividends," World Oil online (Alistair
Macleod, Norway)
March 2008
"Completion system offers multizone stimulation in a single trip," JPT Online (David
Walker, Lafayette)
"Simultaneous fracturing takes off," Hart's E&P (Gary Schein, Dallas; and Stephanie Weiss,
Tomball)
"CT Meets Wellbore Challenges," Hart's E&P (Doru Pumnea and Manfred Sach, Calgary;
and Jason Skufca, Houston)
"Effective High-Density Wellbore Cleaning Fluids: Brine-Based and Solids-Free," SPE
Drilling & Completion (Paul Javora and Qi Qu, Tomball; and Glenn Baccigalopi, Gary
Poole and Bernard Franklin, Houston)
April 2008
"Super-insulating packer fluid minimizes flow assurance concerns," World Oil (Paul Javora,
Xiaolan Wang, Qi Qu, Tomball; and Gary Poole and Shane Dunbar, Houston)
"Pipeline Protection Equipment & Services Technology Forum," Oil & Gas Journal (Andy
Barden, PPS, Houston)
"BJ and Sanjel Expand Well Servicing Technology," Oil & Gas Network (Ragheb Dajani,
Tomball; and Gurjeet Jauhar, Houston)
Reprints of many of these articles can be found in the Authorized Reprints Database in Lotus Notes or on PowerCenter
(search for "reprints"). For more information, contact the authors or Stephanie Weiss.

11. SPE paper summaries
Following are summaries of BJ Services Company technical papers published with the SPE from
February through April 2008.
SPE International Symposium and Exhibition on Formation Damage Control, Lafayette,
La.
SPE 112092 Reasons for Oil-Based Hydraulic Fracturing in Western Siberia Although
water-based fracturing fluids are used in the vast majority of Western Siberia wells, oil-based
fluids can be economical and provide better incremental production with lower water cuts,
possibly related to better control of fracture geometry and formation fluid compatibility.
(Mokhtar Elgassier and Sergey Stolyarov, Tomball)
SPE 112479 Understanding the Origin and Removal of Downhole debris: Case Studies
from the GOM Perforating operations with shaped charges can damage the formation and
leave debris in the wellbore, where it can promote mechanical failures of completion tools
and hamper reserve recovery. Properly managing perforating and wellbore cleaning
operations can improve wellbore integrity and reduce risk. (Paul Javora, Qi Qu, David
Robinson and Gary Poole, Tomball)
SPE 112540 Performance Evaluation of Ionic Liquids as a Clay Stabilizer and Shale
Inhibitor Water-sensitive clays can damage permeability through swelling and/or migration,
so clay-stabilizing additives are used during drilling, completion and stimulation operations.
This paper compares ionic liquids to industry-standard clay-stabilizers and salts. (Sandra
Berry, Joel Boles, Harold Brannon and Brian Beall, Tomball)
SPE Western Regional and Pacific Section AAPG Joint Meeting, Bakersfield, Calif.
SPE 114143 Applications of Ultra Low Density, Operationally Simple, Non-Foamed
Cement Slurries -- Case Histories Foamed cement has long been used to isolate weak
zones, low-pressure formations and highly permeable sands, but it is operationally and
technically challenging to design and pump. To meet industry requirements for operational
simplicity, new technology has allowed the introduction of non-foamed cement systems
mixed at densities as low as 7.5 ppg with compressive strengths as high as 1000 psi. (Nabil El
Shaari and Scott Myers, Bakersfield; and Ragheb Dajani and Dale Doherty, Tomball)
SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, The
Woodlands, Texas
SPE 113149 Effect of External Mechanical Damage on the Fatigue Life of Coiled Tubing
Exposed to Sour Environments This paper analyzes life of mechanically damaged coiled
tubing samples after exposure to sour environments with and without cracking inhibitors. It
proposes an inspection criterion for mechanical damage on strings that will be used in sour
environments. (Tomas Padron, Calgary)
SPE 113676 CT-Failure Monitoring: A Decade of Experience Some 250 coiled tubing
failure investigations are classified by failure mechanism, and trends are analyzed to
determine several critical factors in obtaining reliable coiled tubing service life performance.
(Alex Crabtree, Tomball)
SPE 113708 The Operational and Economical Impact of CT Spoolable Connectors
During the Last Five Years in the Norwegian and Danish Sector of the North Sea: Case
Histories A spoolable coiled tubing connector has enabled a number of new applications in

12. the North Sea over the last five years. This paper reviews the operational challenges that have
been overcome, the economics results of its application, and some new technical
developments. (Manfred Sach, Calgary)
SPE 113719 Coiled Tubing and Nitrogen Generation Unit Operations: Corrosion
Challenges and Solutions Found in Brazil Offshore Operations Although in situ nitrogen
generators solve some logistical issues offshore, they generate nitrogen with oxygen content
as high as 5%. Under bottomhole conditions, this can be very corrosive, which led to this
analysis of corrosion inhibitors and some recommended field practices. (Luis Duque,
Zacarias Guimarães, Macaé; and Sandra Berry, Tomball)
SPE 113773 Entering Multilateral Wells Using Coiled Tubing Open-hole multilateral
wells pose a particular challenge for remedial well operations in which coiled tubing must
locate and enter a lateral. This paper reviews offshore case histories of well interventions
using commercially available multilaterial entry guidance technology. (Robert Proctor and
Ryan Grant, Dubai)
SPE 113783 Efficient Offshore Scale Removal Without a Rig: Planning, Logistics and
Execution To avoid the expense of using a rig to clean out scale deposition in a well, service
company and operator engineers worked together to develop a means of rigging up a 1-3/4-
in., 4500-m-long coiled tubing string in a work area of 234 sq. meters with a crane capacity
of just 12 tons. Planning, logistics and some results from 12 case histories are presented.
(Zararias Guimarães, Victor Almeida, Luis Duque, Julio Pinto, Sandro Coutinho, José
Chagas and Giovani Costa, Macaé)
SPE 113841 Cleanouts With Coiled Tubing in Low-Bottom-Hole Pressure Wellbores
Cleaning solids from wells with low bottomhole pressures using conventional techniques can
require extremely large volumes of nitrogen or low-density hydrocarbon fluids. An
alternative technology combines concentric coiled tubing with a downhole jet pump, which
places no hydrostatic pressure on the formation. Flow loop tests and field case histories
compare these methods. (Jeff Li, Bernie Luft, Graham Wilde, Gerald Alingig and Fidel
Jumawid, Calgary)
SPE 113855 Successful Offshore Application of Acid Tunneling Technology:
Overcoming the Difficulties of High Depths, Temperatures and Deviations An acid
tunneling procedure was used to create a lateral hole in a carbonate reservoir offshore Spain.
This paper discusses acid tunneling operational procedures, tools and results from this case
history. (Jose Diaz, Manuel Navarro and Paul Moss, Venezuela; and James Curtis, Aberdeen)
SPE International Conference on Health, Safety and Environment in Oil and Gas Exploration and
Production, Nice, France
SPE 111953 Harmonizing Efforts to Evaluate Contractor HSE Performance: The API
PIDX Revision of RP 76 Industry-wide cooperation has resulted in the creation of a standard
for sharing HSE and other information, which should simplify data-sharing. (Flavio Simon,
Tomball)