發(fā)布時(shí)間：2018-12-16 08:58

【摘要】：延長氣田延氣2~延128氣藏?zé)o邊、底水,氣藏開發(fā)主要依靠地層流體彈性能量驅(qū)動,從目前開發(fā)特征看,氣田單井產(chǎn)水量以凝析水和層內(nèi)可動水為主。隨著氣田的持續(xù)開發(fā)和儲量動用程度的提高,氣藏出水量和出水氣井?dāng)?shù)不斷增多,氣井井筒積液和出水影響正常生產(chǎn)等問題逐步顯現(xiàn)。為了達(dá)到控水穩(wěn)氣的目標(biāo),針對氣田對排水采氣低成本要求,充分借鑒鄰區(qū)塊蘇里格氣田的排水采氣經(jīng)驗(yàn),即早開展泡沫排水采氣工藝研究為氣田亟需。本論文在油田原有研究成果的基礎(chǔ)上,對氣田出水動態(tài)及氣井出水機(jī)理進(jìn)行全面的調(diào)查,研究氣井在生產(chǎn)過程中產(chǎn)生積液的機(jī)理和規(guī)律,在此基礎(chǔ)上針對氣田動靜態(tài)特點(diǎn),開展水質(zhì)評價(jià)、泡排藥劑研制、施工方式優(yōu)選、工藝參數(shù)優(yōu)化及現(xiàn)場工藝試驗(yàn)等系統(tǒng)泡排工藝研究,為氣田氣井帶液生產(chǎn)期間的泡排采氣工藝優(yōu)化和泡排技術(shù)的應(yīng)用提供依據(jù)和指導(dǎo)。本文針對延長氣井出水特征及地層水分析,對氣田出水特征簡要分析,明確重點(diǎn)排水工藝應(yīng)用層位及地層水類型;然后針對延長地層水特點(diǎn),研制適合延長氣井的泡排工藝配套藥劑;第三,延長氣田泡沫排水工藝方案研究,結(jié)合氣田特點(diǎn)及地面流程現(xiàn)狀,研究適合延長的泡排工藝方案;最后進(jìn)行了泡排工藝礦場先導(dǎo)性試驗(yàn)及效果評價(jià),評價(jià)選井實(shí)施10井泡沫排水工藝現(xiàn)場試驗(yàn)。最終明確了泡排工藝主要實(shí)施井層;建立了延長氣田積液判定準(zhǔn)則;建立了氣田泡排工藝最優(yōu)施工方案;研制了適合氣田的起泡劑(棒)及消泡劑產(chǎn)品系列;并優(yōu)化了適合氣田氣井特點(diǎn)的泡排施工方案(參數(shù))。
[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.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE377

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本文編號：2382099