延长气田泡排剂选型和注入方法研究

发布时间：2018-12-16 08:58

【摘要】：延长气田延气2~延128气藏无边、底水,气藏开发主要依靠地层流体弹性能量驱动,从目前开发特征看,气田单井产水量以凝析水和层内可动水为主。随着气田的持续开发和储量动用程度的提高,气藏出水量和出水气井数不断增多,气井井筒积液和出水影响正常生产等问题逐步显现。为了达到控水稳气的目标,针对气田对排水采气低成本要求,充分借鉴邻区块苏里格气田的排水采气经验,即早开展泡沫排水采气工艺研究为气田亟需。本论文在油田原有研究成果的基础上,对气田出水动态及气井出水机理进行全面的调查,研究气井在生产过程中产生积液的机理和规律,在此基础上针对气田动静态特点,开展水质评价、泡排药剂研制、施工方式优选、工艺参数优化及现场工艺试验等系统泡排工艺研究,为气田气井带液生产期间的泡排采气工艺优化和泡排技术的应用提供依据和指导。本文针对延长气井出水特征及地层水分析,对气田出水特征简要分析,明确重点排水工艺应用层位及地层水类型;然后针对延长地层水特点,研制适合延长气井的泡排工艺配套药剂;第三,延长气田泡沫排水工艺方案研究,结合气田特点及地面流程现状,研究适合延长的泡排工艺方案;最后进行了泡排工艺矿场先导性试验及效果评价,评价选井实施10井泡沫排水工艺现场试验。最终明确了泡排工艺主要实施井层;建立了延长气田积液判定准则;建立了气田泡排工艺最优施工方案;研制了适合气田的起泡剂(棒)及消泡剂产品系列;并优化了适合气田气井特点的泡排施工方案(参数)。
[Abstract]:In Yanchang gas field, gas reservoirs from 2 to 128 have no boundary and bottom water. The development of gas reservoirs mainly depends on the elastic energy of formation fluid. According to the present development characteristics, condensate water and intralayer movable water are the main water production of single well in Yanchang gas field. With the continuous development of gas field and the improvement of reserve production degree, the gas reservoir water output and the number of gas wells are increasing, and the problems of gas well wellbore fluid accumulation and water flow affecting normal production gradually appear. In order to achieve the goal of controlling water and stabilizing gas, in view of the low cost requirement of drainage and gas production in gas field, the experience of drainage gas production of Sulige gas field in adjacent block is fully used for reference, that is, the study of foam drainage gas production technology is urgently needed in gas field as early as possible. On the basis of the original research results of the oil field, this paper makes a comprehensive investigation on the water performance of the gas field and the mechanism of the effluent from the gas well, and studies the mechanism and law of the accumulation of liquid in the production process of the gas well. On this basis, the dynamic and static characteristics of the gas field are studied. To carry out water quality evaluation, development of foam discharge agents, optimal selection of construction methods, optimization of process parameters and field process test, etc. It provides the basis and guidance for the optimization of gas recovery technology and the application of bubble discharge technology during the production of gas well belt fluid in gas field. In this paper, according to the characteristics of outwater and formation water of Yanchang gas well, the characteristics of gas field effluent are analyzed briefly, and the applied horizon and formation water type of key drainage technology are defined. Then according to the characteristics of Yanchang formation water, the foam drainage technology suitable for prolonging gas wells is developed. Thirdly, the foam drainage technology scheme of Yanchang gas field is studied, which is suitable for prolonging gas wells, combining with the characteristics of gas field and the present situation of surface flow. Finally, the pilot test and effect evaluation of foam drainage process field were carried out, and the field test of foam drainage process in 10 wells was evaluated. Finally, it is clear that the foam discharge technology mainly implements well layer, establishes the criterion of extending gas field accumulation, establishes the optimal construction plan of gas field bubble row process, develops foaming agent (rod) and defoamer product series suitable for gas field. The bubble row operation scheme (parameters) suitable for gas well characteristics of gas field is optimized.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE377

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