近日，中原石油工程公司西南工区川东南项目部迎来喜讯。50717钻井队在焦页66平台5口井的施工中取得了重大突破，刷新了西南工区单平台取芯总进尺最长、单井水平段连续取芯进尺最长、水平段取芯芯长最长、水平段单次取芯进尺最长、水平段取芯平均收获率最高5项纪录。页岩气井压后取芯技术达到行业领先水平。

由于该平台在大斜度水平产层段进行压裂后取芯作业，存在异常高压、井漏、地层破碎、卡钻等风险，难度系数极高。面对施工难题，西南工区高度重视，统筹工区内技术力量和资源，成立技术支撑小组，全面负责技术管理和保障工作，实现四级联动。通过组织多次技术方案讨论对接会，针对取芯工具优选、取芯参数优化、钻井液性能管控、复杂故障预防等开展深度研讨，细化方案措施制定，防范各类风险隐患。

通过密切跟踪现场情况、实时优化改进方案、严格技术措施落实、精细刹把操作，成功解决了取芯工具组合难下入、取芯工具内筒不居中、取芯过程轨迹控制困难等难题，实现采用“三筒、六筒”取芯，提高了取芯作业的稳定性和效率，探索了长筒取芯工具极限能力。取芯成绩的取得充分展现了“特别能战斗、特别能担当、特别能超越”石油工程铁军精神，获得了甲方的高度认可！

Recently, the south-eastern Sichuan project Department of the Southwest working area of Zhongyuan Petroleum Engineering Company welcomed good news. The 50717 drilling team made a major breakthrough in the construction of 5 Wells on Jiaoye 66 platform, refreshing the 5 records of the longest total core footage of single platform, the longest continuous core footage of single well, the longest core length of horizontal section, the longest single core footage of horizontal section, and the highest average core yield of horizontal section in the Southwest working area. Shale gas well post-pressure coring technology has reached the industry-leading level.

Due to the risk of abnormal high pressure, loss, formation breakage, stuck drilling and so on, the platform is very difficult to conduct post-fracturing core operation in the highly inclined horizontal production section. In the face of construction problems, the Southwest work area attaches great importance to the overall planning of technical forces and resources in the work area, the establishment of a technical support group, fully responsible for technical management and security work, to achieve four-level linkage. Through the organization of several technical plan discussion matchmaking meetings, in-depth discussions were carried out on the selection of coring tools, the optimization of coring parameters, the management and control of drilling fluid properties, and the prevention of complex faults, and the formulation of detailed plans and measures to prevent various risks and hidden dangers.

By closely tracking the site situation, real-time optimization and improvement schemes, strict implementation of technical measures, and fine brake operation, the problems such as difficult combination of corer tools, uncentered inner barrel of corer tools, and difficult trajectory control during corer process were successfully solved, and the adoption of "three barrel and six barrel" corer was realized, which improved the stability and efficiency of corer operations, and explored the ultimate capability of long barrel corer tools. The achievement of coring results fully demonstrates the spirit of "especially able to fight, especially able to take on, and especially able to surpass" petroleum engineering iron Army, which is highly recognized by Party A!