本文選題：低壓氣井　切入點(diǎn)：壓縮機(jī)　出處：《東北石油大學(xué)》2015年碩士論文

【摘要】：氣田隨著開發(fā)年限的延長,氣藏壓力大幅衰竭.,采氣分公司管轄的地面低壓系統(tǒng)外輸管網(wǎng)冬季運(yùn)行壓力接近2.OMPa,根據(jù)目前氣井的生產(chǎn)情況及氣田開發(fā)預(yù)測,部分氣井井口壓力已低于或接近地面集輸系統(tǒng)壓力,尤其在冬季供氣高峰期,難以進(jìn)入集輸管網(wǎng),影響了外供氣量,導(dǎo)致氣田開采效益逐年變差,但該部分氣井尚未達(dá)到廢棄標(biāo)準(zhǔn),仍有繼續(xù)開發(fā)的價(jià)值。為了實(shí)現(xiàn)此類氣井的有效開采,需地面采取增壓措施將這部分低壓氣井的剩余儲(chǔ)量有效動(dòng)用,提高氣田開采效益。增壓開采是氣田開采后期,由于地層壓力下降,不能滿足地面集輸要求,而采取的旨在提高采出能力和地面輸送能力的采輸方法,低壓氣井增壓是國內(nèi)外氣田在開采中后期為提高采收率而采取的主要措施,在國內(nèi)氣田開發(fā)中應(yīng)用廣泛,大部分氣藏在生產(chǎn)后期都通過實(shí)施增壓開采最大限度地采出天然氣。慶深氣田開發(fā)建設(shè)中尚無成熟增壓開采技術(shù)及經(jīng)驗(yàn)可以借鑒,汪家屯氣田無論從儲(chǔ)量、井?dāng)?shù),還是產(chǎn)量來看,都是中淺層氣田的主力,因此本文以汪家屯氣田為研究對(duì)象,結(jié)合低壓氣井分布情況及其產(chǎn)氣、產(chǎn)水規(guī)律,從增壓時(shí)機(jī)的優(yōu)選、增壓方式及規(guī)模、增壓后產(chǎn)能變化規(guī)律等方面開展研究,探索中淺層氣藏增壓開采建設(shè)可行性,因此,優(yōu)選低壓氣井最多的SY集氣站開展集中增壓先導(dǎo)性試驗(yàn),SY集氣站是目前中淺層氣田中管轄井?dāng)?shù)最多的一個(gè)站,共有氣井20口,目前已有3口氣井因低壓低產(chǎn)停產(chǎn)多年,預(yù)測到2015年前將有11口氣井面臨停產(chǎn)的問題,目前開展增壓的時(shí)機(jī)比較適宜。增壓增產(chǎn)工藝的研究是認(rèn)識(shí)與實(shí)踐相結(jié)合的反復(fù)過程,本文試驗(yàn)增壓增產(chǎn)工藝在中淺層氣藏的適應(yīng)性,為深層氣田增壓開發(fā)推廣提供技術(shù)儲(chǔ)備和支持。
[Abstract]:With the extension of the development years, the gas reservoir pressure is largely depleted. The operating pressure of the surface low pressure pipeline network in winter is close to 2.OMPa. Based on the current production situation of gas wells and the prediction of gas field development,The wellhead pressure of some gas wells is lower than or close to the pressure of surface gathering and transportation system. Especially during the peak period of gas supply in winter, it is difficult to enter the pipeline network, which affects the external gas supply, resulting in the gas field production efficiency becoming worse year by year.But this part gas well has not reached the abandoned standard, still has the value of continuing development.In order to realize the effective exploitation of this kind of gas wells, it is necessary to take supercharging measures on the ground to effectively utilize the remaining reserves of this part of low pressure gas wells and to improve the production efficiency of the gas fields.Supercharged production is a kind of mining and transportation method which is adopted to improve the production capacity and surface transportation capacity because of the decrease of formation pressure, which can not meet the requirements of surface gathering and transportation.The pressurization of low pressure gas wells is the main measure to improve oil recovery in the middle and late stage of gas production at home and abroad. It is widely used in the development of domestic gas fields. Most gas reservoirs produce natural gas to the maximum extent through the implementation of pressurized production in the later stage of production.There is no mature pressurized production technology and experience to be used for reference in the development and construction of Qingshen gas field. The Wangjiatun gas field is the main force of the medium and shallow gas fields in terms of reserves, well numbers and production, so this paper takes Wangjiatun gas field as the research object.Combined with the distribution of low pressure gas wells and the laws of gas and water production, this paper studies the optimal timing of pressurization, the way and scale of pressurization, and the law of productivity change after pressurization, in order to explore the feasibility of pressurized production and construction of medium and shallow gas reservoirs.At present, the sy gas gathering station, which has the most selected low pressure gas wells, is the one station with the largest number of competent wells in the middle and shallow gas fields. There are 20 gas wells, and three gas wells have been shut down for many years due to low pressure and low production.It is predicted that 11 gas wells will be shut down by 2015.The study of supercharging and increasing production process is a repeated process of combining knowledge and practice. This paper tests the adaptability of supercharging and increasing production technology in medium and shallow gas reservoirs, which provides technical reserve and support for the development and popularization of deep gas field pressurization.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE377

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