Anti-Collision and Obstacle Bypassing Techniques in Cluster Wells Drilling in Shallow Layers of the PY30-1 Gas Field
-
摘要: 针对番禺30-1气田丛式井平台已钻井表层井眼位置存在不确定性、利用空槽口钻调整井时容易在浅层钻进中与邻井相碰的技术难点,研究了防碰绕障技术。在井眼轨道设计过程中,利用Landmark软件进行防碰计算,分析根据电子多点测斜数据绘制的邻井井眼轨迹的误差情况,选择合适的绕障初始点、绕障方位、造斜率和绕障近距离段,利用碰到套管的征兆,修正绘制的邻井井眼轨迹并重新进行防碰扫描,设计新的绕障轨道进行施工。在实钻过程中,使用陀螺测斜仪对井眼轨迹进行监控,减小井眼位置的不确定性,选用1.83°弯螺杆进行陀螺定向钻进,快速脱离邻井,且在钻进中随时监测碰撞邻井套管的征兆和返出物中的水泥含量。A11井在钻进过程中应用了防碰绕障技术,顺利钻至井深541.00 m后,距相邻的A8H井5.50 m,距A5H井3.30 m,且呈逐渐远离趋势,成功解决了浅层钻进中的防碰绕障问题。番禺30-1气田丛式井浅层钻进防碰绕障技术可为其他气田类似高密度丛式井浅层钻进防碰绕障提供技术参考。Abstract: In PY30-1 Gas Field, well trajectories at shallow depth in wells drilled on cluster well platforms were uncertain, and it was possible that the infill wells might collide with surrounding wells while drilling in the shallow formations. In order to solve these difficulties, anti-collision and obstacle bypassing techniques were developed. When the well trajectory was designed, an anti-collision calculation was performed using Landmark software. The kick-off point, azimuth, deflection rate and short bypassing section were selected after an analysis of the errors of adjacent well trajectories mapped on the basis of electronic multishot data. The adjacent well trajectories were corrected using anti-collision scanning again based on available indications. Then new bypassing trajectories were designed and developed. In practical drilling, a Gyro was used to measure well trajectories so that the uncertainty of well locations was reduced. Directional drilling was conducted with PDM (Positive Displacement Motor) with top angle of 1.83° in order to escape from the surrounding wells as soon as possible. In addition, monitoring operations were carried out on the signs of surrounding casing collision and the cement content of returns. Well A11 was taken as an example for anti-collision and obstacle bypassing operations with the goal of illustrating and analyzing the results. This well was 5.50 m away from Well A8H and 3.30 m from Well A5H when it was drilled to the depth of 541 m. Gradually, they increased their spacing. Thus it was possible to successfully implement anti-collision and obstacle avoidance techniques while drilling in shallow layers. The research results in this paper will provide the references for anti-collision and obstacle avoidance for similar high-density cluster wells in shallow formations in the PY30-1 Gas Field.
-
Keywords:
- cluster wells /
- shallow formations /
- anti-collision /
- bypassing obstacles /
- PY 30-1 Gas Field
-
-
[1] 柳贡慧,董本京,高德利.误差椭球(圆)及井眼交碰概率分析[J].钻采工艺,2000,23(3):7-14. Liu Gonghui,Dong Benjing,Gao Deli.Probability analysis of error ellipsoid(ellipse) and hole intersection[J].Drilling Production Technology,2000,23(3):7-14. [2] 鲁港,常汉章,邢玉德,等.邻井间最近距离扫描的快速算法 [J].石油钻探技术,2007,35(3):23-26. Lu Gang,Chang Hanzhang,Xing Yude,et al.Fast algorithm for scanning the nearest distance among adjacent wells[J].Petroleum Drilling Techniques,2007,35(3):23-26. [3] 刘修善,苏义脑.邻井间最近距离的表述及应用[J].中国海上油气:工程,2000,12(4):31-34. Liu Xiushan,Su Yinao.Description and application of minimum distance between adjacent wells[J].China Offshore Oil and Gas:Engineering,2000,12(4):31-34. [4] 刘修善,岑章志.井眼轨迹间相互关系的描述与计算[J].钻采工艺,1999,22(3):7-12. Liu Xiushan,Cen Zhangzhi.Description and calculation of relative positions of wellbore trajectories[J].Drilling Production Technology,1999,22(3):7-12. [5] 吴旭东,刘和兴,方满宗,等.乐东221气田A144井表层定向及扩眼钻井技术[J].石油钻探技术,2014,42(6):115-119. Wu Xudong,Liu Hexing,Fang Manzong,et al.Directional drilling reaming technology in the shallow formation fo Well A14H in the LD 22-1 Gas Field[J].Petroleum Drilling Techniques,2014,42(6):115-119. [6] 张晓诚,刘亚军,王昆剑,等.海上丛式井网整体加密井眼轨迹防碰绕障技术应用[J].石油科技论坛,2010(5):13-17. Zhang Xiaocheng,Liu Yajun,Wang Kunjian,et al.Application of path control technology of overall infill drilling on offshore cluster well group[J].Oil Forum,2010(5):13-17. [7] 唐雪平,苏义脑,陈祖锡.三维井眼轨道设计模型及其精确解[J].石油学报,2003,24(4):90-93. Tang Xueping,Su Yinao,Chen Zuxi.Three-dimensional well-path planning model and its exact solution[J].Acta Petrolei Sinica,2003,24(4):90-93. [8] 韩雪银,付建民,钟帆,等.丛式井防碰技术在金县1-1油田的应用[J].中国海上油气,2014,26(5):70-75. Han Xueyin,Fu Jianmin,Zhong Fan,et al.Application of anti-collision solution for cluster wells in JX1-1 Oilfield[J].China Offshore Oil and Gas,2014,26(5):70-75. [9] 刘刚,孙金,何宝生,等.定向井防碰地面监测系统设计及现场试验[J].石油钻探技术,2012,40(1):7-11. Liu Gang,Sun Jin,He Baosheng,et al.Design and field test of surface monitoring system for directional wells anti-collision[J].Petroleum Drilling Techniques,2012,40(1):7-11. -
期刊类型引用(8)
1. 薛洋. 单筒三井钻井技术在文昌油田的应用. 钻探工程. 2023(01): 33-38 . 
百度学术
2. 刁斌斌，高德利，胡德高，刘尧文. 基于贡献率分析的井眼轨迹测量主要误差源辨识. 钻采工艺. 2021(01): 1-6 . 百度学术
3. 刘永辉，李然，朱宽亮. 密集丛式井磁干扰情况下防碰判断与控制方法. 钻采工艺. 2021(01): 43-47 . 百度学术
4. 杨玉豪，张万栋，王成龙，莫康荣，程利民，张雪菲. 南海高温高压气田密集丛式井表层?660.4 mm井段安全钻井技术. 天然气勘探与开发. 2021(02): 75-80 . 百度学术
5. 焦明，霍宏博，窦蓬，刘海龙，陈卓. 海洋随钻近钻头测斜工具研发和应用. 石化技术. 2020(06): 142-143 . 百度学术
6. 张强，杜小松，孔华，晁文学，李亚南. 川南页岩气平台井组浅层预增斜轨道优化技术. 西部探矿工程. 2018(01): 61-65 . 百度学术
7. 刘刚，李祎宸，张家林，刘闯，杨帆，穆文军，王锴. 多传感器下基于遗传算法的钻头与套管间距离研究. 振动与冲击. 2018(12): 9-16 . 百度学术
8. 赵少伟，徐东升，王菲菲，罗曼，李振坤，刘杰. 渤海油田丛式井网整体加密钻井防碰技术. 石油钻采工艺. 2018(S1): 112-114 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 2684
- HTML全文浏览量: 86
- PDF下载量: 2955
- 被引次数: 8
下载:
