Drilling Rate Improvement Technology Adopted in Well HWY-116 of the HWY Block, Saudi Arabia
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摘要: 为提高沙特HWY区块三开直井段钻进坚硬、强研磨性地层时的机械钻速，在HWY-116井三开井段进行了液动射流冲击器旋冲钻井技术试验。根据液动射流冲击器性能参数与岩石抗钻特性参数的关系，与HWY-116井钻井设计结合，优化了钻具组合，选择了与液动射流冲击器配合的PDC钻头，优化了旋冲钻井参数，形成了适用于HWY-116井的ϕ228.6 mm液动射流冲击器旋冲钻井提速技术。应用该提速技术后，HWY-116井三开井段机械钻速为9.40 m/h，与邻井相同井段相比提高了45.5 %。这表明，应用液动射流冲击器旋冲钻井技术可以提高沙特HWY区块坚硬、强研磨性地层的机械钻速。Abstract: In order to raise the ROP in hard and highly abrasive formation in the third spud vertical section of the HWY Block in Saudi Arabia, the rotary percussion drilling technology test with hydraulic jet impactor was carried out in the third spud section of Well HWY-116. According to the relationship between the performance parameters of hydraulic jet impactor and the drilling resistance parameters of rock, the BHA was optimized with the drilling design of Well HWY-116 combined. The PDC bit matched the hydraulic jet impactor was selected to optimize the rotary percussion drilling parameters. Based on these optimizations, a drilling rate improvement scheme was formed for rotary percussion drilling with a ϕ228.6 mm hydraulic jet impactor suitable for Well HWY-116. The ROP in the third spud section of Well HWY-116 was 9.40 m/h, which was 45.5% higher than that of the adjoining wells. The results demonstrated that the ROP in hard and highly abrasive formation in the HWY Block of Saudi Arabia could be improved by the rotary percussion drilling technology with hydraulic jet impactor.
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Keywords:
- hydraulic jet impactor /
- rotary percussion drilling /
- hard formation /
- impact energy /
- penetration rate /
- Block HWY /
- Well HWY-116
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图 1 钻头冠部PDC齿承受轴向力的分布
Figure 1. Distribution of axial forces on the bit teeth of the PDC bit
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图 2 钻头冠部PDC齿承受扭矩的分布
Figure 2. Distribution of the torque on the bit teeth of the PDC bit
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图 3 白云岩、灰岩、碳酸盐岩抗压强度与冲击功的关系
Figure 3. Relationship between compressive strength and impact energy of dolomite, limestone, carbonate
表 1 HWY-116 井三开钻遇地层的情况
Table 1 Information of the formation encountered in the third spud section of Well HWY-116
地层 岩性 埋深/m 厚度/m 抗压强度/MPa Jilh 白云岩 3 301.00 359 138～207 Sudair 白云岩、灰岩 3 675.00 115 139～235 Sudair 灰岩 3 790.00 135 129～188 Khuff 碳酸盐岩 3 925.00 38 217～276 
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表 2 HWY-116井试验井段与邻井相同井段的机械钻速
Table 2 ROP comparison of test section of Well HWY-116 with the counterparts of adjoining wells
井名 钻井液密度/
（kg·L–1）进尺/
m机械钻速/
（m·h–1）钻井
技术HWY-1333井 1.79 597.00 6.41 常规 HWY-1122井 1.76 601.00 5.81 常规 HWY-1075井 1.92 657.00 7.16 常规 HWY-116井 1.92 647.00 9.40 旋冲
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表 3 液动射流冲击器钻台试验结果
Table 3 The test results of hydraulic jet impactor on the drilling platform
排量/（L·s–1） 泵压/ MPa 工作情况 入井前 出井后 入井前 出井后 24 26 2.1 2.2 启动正常 35 35 3.1 3.0 正常工作 45 45 3.5 3.4 正常工作
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表 4 HWY-116井试验井段及邻井相同井段钻头使用情况对比
Table 4 Comparison of the bits used in Well HWY-116 and adjoining wells
井名 纯钻时间/h 进尺/m 钻头磨损情况 HWY-1133井 93 597.00 1 – 1– 0 HWY-1122井 103 601.00 3 – 2 – 3 HWY-1075井 92 651.00 4 – 3 – 2 HWY-116井 69 647.00 1 – 0 – 0
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