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1、,GREATWALL DRILLING COMPANY May 11, 2021,INTRODUCTION ON DIRECTIONAL WELL TECHNOLOGY,Service Capability Experience Performance In Iran,Content,Service Capability,1. LWD2. MWD3. Gyro 4. Single/Multi Shot 5. Downhole Motors 6. NMDC7. HWDP8. Stabilizers (Magnetic and Nonmagnetic) 9. Drilling Jars and S
2、ection Mills10. Maintenance and Calibration Equipment,EQUIPMENT,Service Capability,Service Capability,Service Capability,Comparison of LWD Iran, 4 crews; Sudan, 2 crews; Kazakhstan 5 crews; Colombia 3 crews; Thailand, Niger, Cuba and Uzbekistan each 1, total 18 crews servicing for Oil Company Overse
3、a.,Experience,Experience,In China, GWDC has drilled 1,039 Horizontal Wells, more than 5,000 Directional Wells which includes more than 3,000 cluster wells. Globally, in past three years, GWDC has finished 146 horizontal wells in Kazakhstan, Sudan, Thailand, Cuba, Colombia, Uzbekistan and other regio
4、ns. With the capacity of annual operation 300 horizontal wells, and domestic and international operation experience.,Experience,Service Capability Experience Performance In Iran,Content,Performance In Iran,1. Basic Introduction,North Azadegan oilfield has finished 6 horizontal wells, include one 3-D
5、 horizontal well and one multi-later well, and other 4 horizontal wells are under operation. 2) Drilled well: rate of oil drilling 100%, oil and gas shows good. Team Configuration,2. Operation Challenges,Performance In Iran,Geological challenges: Few drilling data in this block; Big change in lithol
6、ogy; Exist High Pressure salt formation above 1800m; Leakage zone in horizontal section, the safety window of mud density is very narrow; High H2S in the reservoir. Engineering challenges: 3-D horizontal well, difficult to control the trajectory; Horizontal section is over 1,000m, easy to produce an
7、nular hold block,and cause Well leakage; High friction and torque, backing WOB and sand transport is big challenges for horizontal section.,3. Main Technology Application in North Azadegan Oilfield,Performance In Iran,Trajectory optimization design Sidetrack technology Well trajectory control techno
8、logy Friction torque analysis and control technology Bit combined with MWD survey data and GAMMA data, client can calibrate the TVD. Horizontal section: through the resistivity and GAMMA real-time data tracking reservoir, through the survey data to adjust the track to ensure oil drilling rate of 100
9、%, increase drilling efficiency and well production.,4. Geology-Oriented Technology,GE-LWD System,Mainly consists of Two parts: Downhole and Surface Equipment: Downhole equipment mainly includes Gamma Instrument, Resistivity Logging instrument and Survey Instrument; Surface equipment mainly includes
10、 System Software Platform and Surface Processor.,AZNN-004 LWD Comparison with Wireline Logging Curve Resistivity data and Well logs match very consistently Gamma data and Well logs are basically the same.,GE-LWD Logging Curve,Wireline Logging Curve,Our LWD can meet the needs of the Geological, Reser
11、voir and Effective Drilling and trajectory.,The average MD is 4,027, Kick-off point is at about 2294m. In Directional section, ROP averages at 2.94. Slide Drilling ratio is 45%.,The average MD is 4,027, Kick-off point is at about 2294m. In Horizontal Section, ROP averages at 3.17. Slide Drilling rat
12、io is 8.71%.,GWDC attaches great importance for Iran Marketing. According to the required number of teams, GWDC will promptly organize the suitable operation teams. Direction equipment and tools reserves for Iran: 1) GE-LWD:2 sets 2) GW-BWR:5-10 sets 3) EMWD:1 sets 4) MWD:8-10 sets 5) Directional tools:meet the continued operation of the project,POTENTIAL SERVICE CAPACITY,