苏里格南区块小井眼井二开一趟钻钻井技术

沈兆超; 霍如军; 郁燕飞; 董易凡; 倪小伟; 雷宇

doi:10.11911/syztjs.2020081

苏里格南区块小井眼井二开一趟钻钻井技术

1.
中国石油集团渤海钻探工程有限公司第三钻井工程分公司，天津 300280
2.
中国石油长庆油田分公司苏里格南作业分公司，内蒙古鄂尔多斯 016299

详细信息

作者简介:
沈兆超（1989—），男，天津人，2011年毕业于中国石油大学（华东）石油工程专业，2014年获中国石油大学（华东）油气井工程专业硕士学位，工程师，主要从事钻井现场工程技术管理工作。E-mail：suiyuan6901@163.com

中图分类号: TE242
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出版历程
- 收稿日期: 2019-12-10
- 修回日期: 2020-07-18
- 网络出版日期: 2020-08-20
- 刊出日期: 2020-11-30

One-Trip Drilling Technology of the Second-Spud Section for Slim-Holes in the Southern Sulige Block

1.
The No.3 Drilling Engineering Company, CNPC Bohai Drilling Engineering Company Limited, Tianjin, 300280, China
2.
Southern Sulige Operation Company, PetroChina Changqing Oilfield Company, Erdos, Inner Mongolia, 016299, China

摘要

摘要: 为了进一步提高苏里格南区块小井眼井的钻井速度、降低开发成本，开展了二开一趟钻技术攻关研究。进行了钻头改型，通过优化钻头布齿和流线设计，以增强钻头的稳定性及抗研磨性；优化了螺杆设计，以延长螺杆的使用寿命、提高输出功率；优化了钻进参数，实行激进化钻进，以提高钻头的破岩效率；优选了钻具组合，调整了井眼轨迹，以保证一趟钻完成长稳斜段、降斜段钻进。SN00XX平台2口小井眼井开展了二开一趟钻试验，其中SN00XX-02井实现了二开螺杆一趟钻完钻，SN00XX-04井实现了二开螺杆、钻头均一趟钻完钻；另外2口井应用一趟钻钻井技术后钻井周期缩短7.6%。研究结果表明，苏里格南部小井眼井二开一趟钻钻井技术能够顺利实施，且钻井提速效果明显，可为后续苏里格南区块小井眼井钻井提速提效提供技术支持。
- 小井眼 /
- 一趟钻 /
- 井眼轨迹 /
- 钻头 /
- 优化设计 /
- 苏里格南区块
Abstract: In order to further enhance the penetration rate of slim holes in the Southern Sulige Block and reduce the development cost, technical research on the one-trip drilling technology of the second-spud section has been carried out. For this purpose, by means of bit modification, the bit teeth arrangement and streamline designs were optimized to enhance the bit stability and abrasion resistance. The positive displacement motor (PDM) design was optimized to prolong the service life and output power of PDM. The drilling parameters were optimized to realize an aggressive drilling and improve the rock breaking efficiency of bit. The BHA was optimized and the well trajectory was reasonably adjusted to ensure that the drilling of the long hold section and drop section could be fulfilled in one trip. Tests of one-trip technology of the second-spud section were carried out on two slim holes at SN00XX platform. Among these wells, Well SN00XX-02 achieved one-trip drilling of the second-spud section with the PDM. Well SN00XX-04 achieved one-trip drilling of both the PDM and the bit in the second-spud section. The technology of one-trip drilling was successfully applied in other two wells, and the drilling cycles were shortened by 7.6%. The research results showed that one-trip drilling technology could effectively implemented in the second-spud section, with remarkable improved penetration rate, which provided a technical support for the follow-up rapid drilling of slim-holes in the Southern Sulige Block.
- slim hole /
- one-trip drilling /
- hole trajectory /
- bit /
- optimizing design /
- Southern Sulige Block

HTML全文

图 1 SD6534ZC钻头

Figure 1. Bit SD6534ZC

下载: 全尺寸图片幻灯片

图 2 推进定转子线型优化

Figure 2. Linear optimization of promoting stator and rotor

下载: 全尺寸图片幻灯片

图 3 SN00XX平台4口井分地层机械钻速对比

Figure 3. Comparison on the strata-based penetration rates of 4 wells at Platform SN00XX

下载: 全尺寸图片幻灯片

表 1 苏里格南区块小井眼井二开两趟钻导向钻进不同地层时的井斜变化趋势

Table 1 Change trends of hole deviation in different strata with two-trip directional drilling of slim holes in the second-spud section in the Southern Sulige Block

地层	垂深/m	井斜变化规律	井斜变化率/（（°）·（30m）^–1）	方位变化规律	方位变化率/（（°）·（30m）^–1）
直罗组	992.00	基本稳斜		微降	0.2～0.3
延安组	1 344.00	上部微增下部降斜	0.4～0.6 0.4～1.5	微降	0.2～0.6
延长组	2 418.00	上部微增中下部降斜	0.2～0.4 0.8～3.0	微降或大降	0.2～1.5
纸坊组	2 662.0	基本稳斜或微降	0.1～0.4	微降	0.2～0.3
和尚沟组	2 803.0	基本稳斜		微降	0.2～0.3
刘家沟组	3 130.0	上部基本稳斜或微增下部降斜	0.1～0.4 0.2～0.8	微降	0.2～0.5
石千峰组	3 426.0	降斜	0.2～1.2	微降	0.2～0.8
石盒子组	3 683.0	降斜	0.5～1.2	微降	0.2～1.0

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表 2 SN00XX平台各井与一趟钻试验井5刀翼钻头钻进数据对比

Table 2 Comprehensive comparison on the 5-blade bits used in wells at SN00XX platform and the test wells of one-trip drilling

井号	钻头型号	钻进井段/m	进尺/m	纯钻时间/h	螺杆工作时间/h	机械钻速/(m·h^–1)
SN00XX-01	SD6521ZC	674.00～2 884.00	2 210.00	90.0	104.0	24.56
SN00XX-02	SD6533ZC	693.00～3 220.00	2 527.00	116.5	181.5	21.69
SN00XX-03	SD6521ZC	694.00～3 231.00	2 537.00	92.5	103.0	27.43
SN00XX-04	SD6534ZC	678.00～3 760.00	3 082.00	163.0	192.0	21.99
SN01XX-03	SD6534ZC	716.00～4 008.00	3 292.00	152.0	200.0	21.66
SN01XX-09	SD6534ZC	694.00～3 783.00	3 089.00	144.0	185.0	21.45

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表 3 苏里格南区块小井眼井二开一趟钻导向钻进不同地层时的井斜变化趋势

Table 3 Change trends of hole deviation in different strata with one-trip directional drilling of slim holes in the second-spud in the Southern Sulige Block

地层	垂深/m	井斜变化规律	井斜变化率/（（°）·（30m）^–1）	方位变化规律	方位变化率/（（°）·（30m）^–1）
刘家沟组	3 130.00	上部微增下部微增	0.1～0.6 0.1～0.3	微降	0.2～0.5
石千峰组	3 426.00	上部基本稳斜或微增下部微降	0.1～0.4 0.2～0.7	微降	0.2～0.8
石盒子组	3 683.0	降斜	0.4～0.7	微降	0.2～1.0

下载: 导出CSV

表 4 一趟钻完钻井与两趟钻完钻井的平均钻井周期对比

Table 4 Comparison on average drilling cycles of wells by one-trip drilling and two-trip drilling

井号	井深/m	水平位移/m	钻井周期/d
SN00XX-04	3 760.00	1 059.64	10.63
SN01XX-03	4 008.00	1 464.17	11.67
SN01XX-09	3 783.00	914.31	10.35

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