Joint exploitation method of upper Paleozoic sulfur-containing natural gas and lower Paleozoic sulfur-containing natural gas

Abstract

The invention discloses a joint exploitation system of upper Paleozoic sulfur-containing natural gas and lower Paleozoic sulfur-containing natural gas, and belongs to the field of petroleum engineering. The joint exploitation system of the upper Paleozoic sulfur-containing natural gas and the lower Paleozoic sulfur-containing natural gas comprises a lower Paleozoic output system and an upper Paleozoic output system, and a gas conveying pipeline of the lower Paleozoic output system is connected to a gas conveying pipeline of the upper Paleozoic output system. The lower Paleozoic output system comprises a first gas-liquid separation device, a heating device and a liquid desulfurizing device. In the upper Paleozoic gas reservoir area, the lower Paleozoic output system does not need to be newly built, the built upper Paleozoic output system can be utilized for safely conveying the sulfur-containing natural gas in a lower Paleozoic well to a treatment plant to be desulfurized, an upper Paleozoic gas well and the lower Paleozoic gas well achieve joint exploitation, and the aim of reducing engineering construction investment is achieved.

Description

[0001] This case is a divisional application for the invention name "Xiagu Sulfur-Containing Natural Gas and Ancient Sulfur-Free Natural Gas Joint Production System", application number "2019103485492", and application date "2019 / 4 / 28". technical field [0002] The invention belongs to the field of natural gas purification, and is applied to the gas collection, treatment and export of the lower paleo-gas reservoirs in the main area of ​​the above-mentioned paleo-gas reservoirs, and specifically relates to a method for co-production of lower paleo-sulphur-containing natural gas and ancient sulfur-free natural gas. Background technique [0003] The Sulige Gas Field of Changqing Oilfield focuses on the development of ancient gas reservoirs. The natural gas treatment process of the ancient gas gathering stations in the area is as follows: after the natural gas from each gas production main pipeline is collected by the general authority of the station, it enters production separati...

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Problems solved by technology

[0007] The present invention provides a method for co-production of lower ancient sour-containing natural gas and ancient sulfur-free natural gas. The purpose is to solve the above problems, and solve the problem that the gathering and transportation system of the ancient gas reservoir adopts a non-sulfur-resistant design, and the sulfur-containing gas wells of the lower ancient gas reservoir cannot directly enter the ancient collection. input system

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