井下視像技術(shù)在魯邁拉油田大斜度井修井作業(yè)中的應(yīng)用

井下視像技術(shù)在魯邁拉油田大斜度井修井作業(yè)中的應(yīng)用

占煥校，冀成樓，崔可平，索明武

(中國(guó)石油伊拉克公司魯邁拉項(xiàng)目作業(yè)部，北京 100120)

摘要：井下視像技術(shù)可獲得直觀、清晰的井下井筒圖像，有助于快速識(shí)別井況并為后續(xù)作業(yè)提供相關(guān)信息和依據(jù)。針對(duì)魯邁拉油田大斜度井在修井作業(yè)過(guò)程中存在的小井眼井筒尺寸限制、井況復(fù)雜、難以掌握井底實(shí)際情況等作業(yè)難題，引入了井下視像新技術(shù)，從作業(yè)管柱內(nèi)下入井下視像工具對(duì)井筒進(jìn)行實(shí)時(shí)檢測(cè)和分析。多個(gè)方面的現(xiàn)場(chǎng)應(yīng)用實(shí)例表明，井下視像技術(shù)在大斜度井的井筒檢測(cè)、井況分析及打撈作業(yè)諸方面能夠有效提高診斷精度及作業(yè)效率，縮短作業(yè)周期，降低作業(yè)成本。同時(shí)，井下視像技術(shù)對(duì)于觀測(cè)井底落魚(yú)及管柱損壞情況、檢查射孔質(zhì)量及分析井筒損壞機(jī)理等工作均具有一定的指導(dǎo)意義。

關(guān)鍵詞:井下視像技術(shù);大斜度井;修井作業(yè);魯邁拉油田

中圖分類(lèi)號(hào)：TE358

作者簡(jiǎn)介：第一占煥校(1983年生)，男，碩士，工程師，2008年畢業(yè)于中國(guó)石油大學(xué)(華東)，現(xiàn)主要從事修井工程及現(xiàn)場(chǎng)作業(yè)協(xié)調(diào)管理工作。郵箱：zhanhuanxiao@cnpcint.com。

Application of Downhole Video Technology to High Angle Well

Workover in Rumaila Oilfield

Zhan Huanxiao, Ji Chenglou, Cui Keping, Suo Mingwu

(PetroChinaIraqFZEInternational,Beijing100120,China)

Abstract：Downhole video technology can provide valuable wellbore information for the forward operations with its timely clear and stable images. In order to solve the downhole technical problems of wellbore diameter’s limitation and complex underground condition during workover operation in high angle well, the downhole video technology was introduced to obtain the necessary downhole wellbore real-time information in Rumaila Oilfield. The field applications showed that downhole video technology could provide an effective method to improve diagnostic accuracy and work efficiency, reduce operation time and cut the overall cost of workover operations in high angle well. The application also had a good guiding significance for investigating downhole fish or tubular condition, detecting perforation quality and analyzing the mechanism of wellbore damages.

Key words: downhole video technology; digh angle well; workover operation; Rumaila Oilfield

魯邁拉油田現(xiàn)有1000多口油水井，經(jīng)過(guò)40多年的開(kāi)發(fā)，受油藏壓力遞減、水層推進(jìn)及部分井底H2S、CO2腐蝕介質(zhì)的影響，油田部分老井因井筒完整性問(wèn)題而停產(chǎn)，如套管腐蝕穿孔、作業(yè)或完井管柱斷脫墜井、井口設(shè)備嚴(yán)重腐蝕、井口及方井周?chē)霈F(xiàn)的氣體或液體溢流等，需要進(jìn)行打撈落魚(yú)、擠水泥封堵漏失套管段、隔離水層或重新射孔等修井作業(yè)。……