涩北二号气田集中气举排采关键配套技术  

Key supporting technologies for gas production using centralized gas liftand water drainage in Sebei-2 gas field

作　　者：黄林 侯奇 欧宝明 叶富艳 李方明 黄天鹏 方雯 HUANG Lin;HOU Qi;OU Baoming;YE Fuyan;LI Fangming;HUANG Tianpeng;FANG Wen(PetroChina Qinghai Oilfield Downhole Operations Company,Dunhuang,Gansu,736202,China;PetroChina Qinghai Oilfield Gas Production Plant No.2,Dunhuang,Gansu,736202,China;PetroChina Qinghai Oilfield Drilling and Production Technology Research Institute,Dunhuang,Gansu,736202,China;CPECC Qinghai Branch,Dunhuang,Gansu,736202,China;PetroChina Qinghai Oilfield Gas Field Development Division,Dunhuang,Gansu,736202,China)

机构地区：[1]中国石油青海油田公司井下作业公司,甘肃敦煌736202 [2]中国石油青海油田公司采气二厂,甘肃敦煌736202 [3]中国石油青海油田公司钻采工艺研究院,甘肃敦煌736202 [4]中国石油工程建设有限公司青海分公司,甘肃敦煌736202 [5]中国石油青海油田公司气田开发处,甘肃敦煌736202

出　　处：《天然气与石油》2022年第3期15-21,共7页Natural Gas and Oil

基　　金：中国石油天然气股份有限公司科技重大专项“柴达木盆地老气区控水稳气及新气区高效开发技术研究”(2016E-0106GF)。

摘　　要：涩北二号气田疏松砂岩边水气藏出水井逐年增多、需连续排水才能维持生产。同时,由于气井出砂严重,致有杆泵、电泵等人工举升工艺应用受限。针对这个问题,根据气井分布集中的地面条件,结合现有地面生产流程及气井生产动态,开展了气举方式、气举参数、压缩机选型、水合物防治、注气流程等系统配套研究。形成了采用电机驱动往复式压缩机湿气增压、集气站分区配气、多井气举注气流程;充分利用增压气体余温加注气干线保温和阀组区注抑制剂的防治水合物措施和套管注气油管生产、光油管与气举阀相结合举升方式的多井集中气举排水采气工艺技术方案。至2020年底,己建成可同时满足83口气井气举的配套工程,实施连续气举排水井70口,已累计增产天然气1.22×10^(8)m^(3),效果显著,对有水气藏治水有重要借鉴意义。In the Sebei-2 gas field,the number of water wells in the Sebei loose sandstone edge water gas reservoir increases year by year,therefore continuous drainage is required to maintain production.At the same time,due to the serious sand production in the gas wells,the application of artificial lift technologies such as rod pumps and electric pumps is fairly limited.In response to this problem,according to the surface conditions of distribution density of gas wells,incorporating the existing surface production process and gas well production dynamics,the research on gas lift method,gas lift parameters,compressor selection,hydrate inhibition and gas injection processes has been carried out.The process of using motor-driven reciprocating compressors for boosting wet gas,gas distribution at gathering stations,and multi-well gas lift gas injection was developed.This research also makes full use of the residual heat of the booster gas for injection as heat insulation of the trunk line and for injection into valve manifold area for hydrate inhibition and into casing annulus to enhance tubing oil production;and develops the multi-well centralized gas lift drainage gas extraction process and gas lift valve combined lifting method.By the end of 2020,it has completed the associated facilities project which can meet the gas lift of 83 gas wells at the same time;70 continuous gas lift drainage wells have been implemented,and has produced 122 million m^(3)of additional natural gas.As the impact is significant,this research can be used as an important reference for managing water of water-gas reservoirs.

关 键 词：集中气举 连续排水 涩北二号气田 地面配套 压缩机配置 水合物预防 

分 类 号：TE377[石油与天然气工程—油气田开发工程]