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对高压天然气井实施HWO（液压修井）作业时常遇到的困难是：控制BOP（防喷器）环境、选择合适的密封材料和防止水化物形成等。本文推出一种解决这些问题的新方法，使作业人员及设备更加安全。曾有多种减少高压天然气井修井作业危险的方法问世，但实施天然气井修井作业时的工作条件时人身和设备都极不安全，常会遇到以下问题：①在防喷器组顶部作业极其危险；②当管柱下入井眼时，高压气井难以密封，天然气会从密封处泄漏，致使密封部件和BOP很快损坏；③天然气中含水，会在井眼内形成水化物。作业时以慢速连续循环BOP，会对人身及设备更为安全些；如果作业者按照本文所述的方法（控制BOP环境；选择合适的密封材料；防止水化物形成），无疑会降低设备设计和更新所需费用，延长设备使用寿命。
The difficulties encountered when implementing HWO (Hydraulic Workover) operations on high-pressure natural gas wells are: controlling the BOP (BOP) environment, choosing the right seal and preventing the formation of hydrates. This article presents a new way to solve these problems, making the workforce and equipment safer. There have been many ways to reduce the risk of well workover in high pressure natural gas wells. However, people and equipment are extremely unsafe to implement workover conditions in natural gas wells. The following problems are often encountered: (1) At the top of the BOP stack Extremely dangerous; ② When the pipe string into the hole, the high pressure gas well is difficult to seal, natural gas leak from the seal, resulting in seal parts and BOP quickly damaged; ③ natural gas in the water, will form hydrate in the wellbore. Working at a slow, continuous cycle of BOPs can be both safer for people and equipment; undoubtedly reducing equipment design if the operator follows the methods described in this article (controlling the BOP environment; choosing the right seal material and preventing hydrate formation) And update the required costs, extend equipment life.