Featured Technologies

• HTHP Well Cementing

• Extended Interval Well Cementing

• Complex Hydraulic System Well Cementing

• LP Thief Zone Cementing Technical Package

• Gypsum Well Cementing

• ERD Well Cementing

• High H2S and Anti-corrosion Well Cementing

• Deep Slim Hole and Clearance Well Cementing

• Unconventional Cementing Technical Packages

• Polar Ultra-low Temperature Well Cementing

• Committed to oil well cement additives R&D, the master lab headquartered in Shanghai along with 6 portable labs worldwide are 7x24x365 available for technical support.

• Proven slurry systems are available in place, including Conventional, Low Temp Early Strength, Ultra-high Density, Low Density High Strength, Extending, High Temp. Differential, Brine-proof,  High Effective Preflush, Permafrost Low Hydration Heat, Ultra-low Temp. Low Density Gas Tight, etc.

• Full additive product line covering Retarder, Fluid Loss, Dispersant, Early Strength, Anti-gas Migration, Lighting/ Weighting Material, Expander, Defoamer, CS Enhancer, LCM, Chemical Wash, Spacer, etc.

Case Study

1、Kynsko-Chaselskoye Neftegas LLC., Russia -- Ultra-Low Temp Well with LP Thief Zone Cementing

Client: Kynsko-Chaselskoye Neftegas LLC., Russia

Duration: Dec 2017 to Feb 2019

Workload: 35 wells

CHALLENGES:

• Low temp permafrost, shallow gas, narrow pressure window

• Unsteady borehole, uneven caliper

• Ultra-low ambient temp

DELIVERABLES：

• 19 gas wells cemented, including 16 deviated and 3 vertical

• 100% qualified, 85% excellent bonding

• Trustworthy production phase performance

2、NovaTek, Russia -- Ultra-Low Temp Well with LP Thief Zone Cementing

 Client: NovaTek, Russia 

Duration: Started at Dec., 2018  

Workload: totally 35 horizontal wells cemented up to date

CHALLENGES：

• Located in high latitude polar area, long interval collapsing permafrost

• High porosity, thief zones, continuous gas zone within thin interlayer

• Low cement compressive strength development under low temp

• Unsatisfied diplacement efficiency affected by OBM

DELIVERABLES：

• Operated under extremely cold ambient environment

• 100 % qualified, 90 % excellent achieved

• Customized low hydration heat early strength slurry for permafrost applied

• l Low temp., low density gas tight slurry to mitigate annulus gas channelling 

3、Petronas, Garraf, Iraq – Large Inclination & ERD Well Cementing

Client:  Petronas, Garraf, Iraq 

Duration: Started at Feb 2019 

Workload: totally 13 wells cemented up to date 

CHALLENGES：

• Deviated wells with long open holes

• Long collapsing shale formation

• Large 70°maximum inclination leads to worsening casing standoff

• Satisfied displacement efficiency to be achieved, easy channeling

DELIVERABLES：

• Comprehensive losses precautionary measures developed, no losses were monitored during the cementing jobs

• All casing bonding were evaluated above qualified

4、ROO, Rumaila, Iraq – Development Well Cementing

Client: ROO, Rumaila, Iraq 

Duration: Started at Oct 2018

Workload: Totally 12 vertical, S & J shaped wells cemented up to date

CHALLENGES：

• Three problematic zones were simultaneously present in 12 1/4” section including Dammam thief zone, Tayarat sulfurous water, and Hartha thief zone

• Difficult to cure upper crack and Karst severe thief zone

• Rigor DPZ bonding and isolation expectation of the Client

DELIVERABLES：

• Top ranking in 9-5/8” casing bonding evaluation in Rumaila

• 7” production casing met all expectations of the Client

• Proven regular and special comprehensive Dammam and Hartha Loss Circulation curing technical package was developed.

5、Complex Configuration Exploration Well Cementing

Client: PPL, Block 8, Iraq

Duration: Apr 2019 to Jan 2020

Workload: 1 exploration well

CHALLENGES： 

• 5,050m of TD was achieved in 6 sections, narrow PP & FP window Ultra-deep stab-in cementing with 300+ m3 slurry pumped

• HP brine and thief zones were encountered in same open hole section

• 3,975m of interval was cemented by one stage, with 88°of temp differential

DELIVERABLES：

• 1st ultra-deep stab-in cementing application

• 2.35 SG ultra-high density cement slurry application

• 1.25 SG ultra-low density cement slurry application

• 7”liner keep rotating while cementing job

Client Evaluation

1、GAZPROM IRAQ B.V,Badra oilfield,Iraq

2、Mdoc, East Baghdad oilfield, Iraq

3、 Zhenhua, EBS oilfield, Iraq

4、BASHNEFT INTERNATION B.V,Block-10 oilfield,Iraq

5、PETRONAS CARIGALI IRAQ HOLDING B.V,Garraf oilfield,Iraq