本文選題：水平井　切入點(diǎn)：鉆井液　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,蘇里格氣田在中、淺地層的勘探開發(fā)現(xiàn)已進(jìn)入中后期,產(chǎn)能逐年衰減,要想保持持續(xù)穩(wěn)定發(fā)展,必須擴(kuò)大勘探領(lǐng)域,尋找新的儲(chǔ)量。這就要向深、難、廣的方向發(fā)展,開發(fā)水平井勢(shì)在必行。蘇里格氣田石盒子、山西組地層含有大量油頁巖、碳質(zhì)泥巖、硬脆性泥頁巖,井壁不穩(wěn)定,下部砂巖裂縫發(fā)育,要求鉆井液必須具有防漏和堵漏特性、具有較高封堵防塌能力的鉆井液體系。為滿足發(fā)現(xiàn)、保護(hù)油氣層的要求,確保鉆井施工的順利進(jìn)行,對(duì)水平井的鉆探技術(shù)有了更高的要求,其中鉆井液是提高蘇里格氣田水平井鉆井水平的關(guān)鍵技術(shù)之一。本文簡述了蘇里格氣田地質(zhì)特點(diǎn),針對(duì)水平井鉆進(jìn)過程中頻繁出現(xiàn)的井壁不穩(wěn),井眼凈化,井漏、起下鉆困難,井噴,卡鉆等井下復(fù)雜情況,以及井眼清潔、潤滑防卡、油氣層保護(hù)等鉆井液施工問題。根據(jù)鉆井液現(xiàn)場(chǎng)成功的施工經(jīng)驗(yàn)結(jié)合實(shí)驗(yàn)室各項(xiàng)實(shí)驗(yàn)結(jié)論,優(yōu)化鉆井液配方和施工方案,改善鉆井液的防塌、防漏、潤滑防卡等性能,改善裸眼完井生產(chǎn),有效地清除鉆屑,有利于環(huán)境和儲(chǔ)層保護(hù),以滿足安全快速鉆井需要。從而縮短鉆井周期,降低鉆井成本,達(dá)到提高公司鉆井效益的目的。
[Abstract]:In recent years, the exploration and development of Sulige gas field in the middle and shallow strata has entered the middle and late stages, and the production capacity has declined year by year. In order to maintain the sustained and stable development, it is necessary to expand the exploration field and look for new reserves. This will have to develop in a deep, difficult and broad direction. It is imperative to develop horizontal wells. In Shihezi, Shanxi formation of Sulige gas field, there are a lot of oil shale, carbonaceous mudstone, hard and brittle shale, unstable wellbore, and fracture development in the lower part of sandstone, so the drilling fluid must have the characteristics of leakage prevention and plugging. Drilling fluid system with high plugging and sloughing prevention capability. In order to meet the requirements of discovery, to protect oil and gas reservoirs and to ensure the smooth drilling and construction, there is a higher requirement for drilling technology in horizontal wells. The drilling fluid is one of the key technologies to improve the drilling level of horizontal wells in Sulige gas field. This paper briefly describes the geological characteristics of Sulige gas field, aiming at the frequent occurrence of unstable wellbore, hole purification, well leakage and difficulties in drilling in horizontal wells. The problems of drilling fluid construction, such as borehole cleaning, lubrication and blocking prevention, oil and gas reservoir protection, etc. Based on the successful construction experience of drilling fluid in the field combined with the experimental conclusions of the laboratory, the drilling fluid is complicated in the downhole, such as blowout, drilling jam and so on. Optimization of drilling fluid formulation and operation scheme, improvement of sloughing, leakage prevention, lubricating and blocking performance of drilling fluid, improvement of open hole completion production and effective removal of drilling debris are beneficial to environmental and reservoir protection. In order to meet the requirements of safe and rapid drilling, the drilling cycle can be shortened, the drilling cost will be reduced, and the drilling efficiency of the company will be improved.
【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】：2017
【分類號(hào)】：TE254

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