摘要
GP06-9井是长庆油田分公司在靖边中部气田下古生界薄气层实施的第一口水平开发试验井。钻探目的层为奥陶系下统马五13层。针对有效储层厚度0.5-1.0 m,并且埋藏深度超过3 180.00 m的地质状况,采取直井探明储层地质信息后,填井至造斜点以上50 m,再侧钻水平井。该井在优化井身结构设计的基础上,通过采取挤压封堵技术、裸眼侧钻技术、井眼轨迹控制技术等关键技术,解决了上部易漏层刘家沟组地层的漏失、下部＂双石＂层和石炭系＂煤层＂的坍塌及长水平井段的井眼轨迹控制、长裸眼井段的井壁稳定等技术难题,总结了在薄气层水平井钻井施工的技术措施。GP06-9井的成功不仅对提高该区块的产能具有重要作用,而且为有效开发该区块的薄产层积累了十分重要的实践经验。
Well GPO6-9 is the first horizontal development test well to exploit gas in Changqing Oilfield＇s Palaeozoic thin layer. Its target bed is Mawu 13 of Ordovician system. Considering the effective reservoir thickness of 0.5--1 m and the buried depth exceeding 3 180 m, the vertical well was used to obtain geological information. After obtaining the required data, the well was plugged back to kick off point and sidetracked into a horizontal drilling. Based on the optimized design of well structure, using the squeeze and block off technology, open hole sidetrack technology and horizontal well trajectory control technique, the problems were solved, including easy loss in upper part in I.iujiagou formation, collapse in lower part ＂Shihezi and Shiqianfeng＂, ＂coal bed＂ sloughing of Carboniferous system, long horizontal section well path control technique and long open hole section stability. This paper summarizes horizontal drilling techniques of thin gas layers. The success of well GP06 9 not only improves the productivity of this block but also provides an important experience and operation support in developing thin gas layers in this block effectively.
出处
《石油钻探技术》
CAS
北大核心
2009年第2期89-93,共5页
Petroleum Drilling Techniques
关键词
薄层
水平井
井眼轨迹
裸眼侧钻
堵漏
承压能力
导向钻井
GP06-9井
thin layer
horizontal well
hole trajectory
open hole sidetracking
loss circulation control
resistance to pressure
navigational drilling
Well GP06-9
