高压气井环空压力管理图版设计与应用

发布时间：2018-07-27 12:47

【摘要】：环空带压是国内外气田普遍存在的气井完整性管理技术难题,科学的环空压力管理能够有效缓解环空带压问题的恶化,保证油气井的长期完整性。但目前国际上应用广泛的几种环空压力管理技术均无法满足中国石油塔里木油田公司(以下简称塔里木油田)超深层高压气井的管理要求,急需一套适合于该公司超深层高压气井的环空压力管理技术。为此,基于国内外现有的气井环空压力管理技术,综合考虑超深层高压气井A环空对应所有井屏障部件在不同生产和关井工况下的安全性,创新了一套A环空最大允许压力曲线和A环空最小预留压力曲线的计算方法 ;同时,兼顾安全性和可操作,通过进一步优化B、C、D环空最大允许压力计算的考虑因素和安全系数取值,提出了一套B、C、D环空最大允许压力计算新方法 ;进而设计完成了一套高压气井环空压力管理标准化图版。该项技术已在该公司所有高压气井进行了推广应用,有效地支撑了塔里木油田超深层高压气井的安全高效开发。
[Abstract]:The annular band pressure is a common technical problem of gas well integrity management in gas fields at home and abroad. The scientific annular pressure management can effectively alleviate the deterioration of the annular pressure problem and ensure the long-term integrity of the oil and gas wells. However, several kinds of air pressure management technologies widely used in the world are unable to meet the PetroChina Tarim Oilfield Co. Following the management requirements of the ultra deep pressure gas wells in the Tarim Oilfield, a set of ring air pressure management techniques suitable for the super deep pressure well of the company is urgently needed. Therefore, based on the existing air well annular pressure management technology at home and abroad, the A annular space of the super deep pressure gas well is considered to correspond to the different production and closing of all well barrier components. A set of calculation methods for the maximum permissible pressure curve of A annular space and the minimum reserved pressure curve of A ring are innovated. At the same time, the maximum allowable pressure calculation of the maximum permissible pressure of B, C, D annular space is taken into consideration, and a set of maximum allowable pressure calculation for B, C, D ring air is proposed. The new method has been designed and completed. This technique has been applied to all high pressure gas wells in the company, which effectively supports the safe and efficient development of the ultra deep pressure gas wells in Tarim Oilfield.
【作者单位】：长江大学机械工程学院;中国石油塔里木油田公司;中国石油川庆钻探工程公司地质勘探开发研究院;
【分类号】：TE37

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