本文選題：注水井 + 洗井封隔器　； 參考：《石油鉆探技術》2017年05期

【摘要】：針對埕島油田現(xiàn)有環(huán)空安全封隔器無洗井通道因而難以滿足開發(fā)要求的問題,在分析國內(nèi)外環(huán)空安全工具優(yōu)缺點的基礎上,研制了具有2條獨立液路(分別控制洗井和坐封機構)的液控式環(huán)空安全封隔器。該封隔器的頂部液路控制洗井機構,液壓強制開啟洗井,液控管線泄壓后由雙重彈簧控制滑套,強制關閉;中部液路與底部液路相通,控制該封隔器與管柱油層部位的分層液控封隔器同時坐封;該封隔器設計有坐封鎖緊機構,在緊急情況下,液控管線意外泄壓膠筒也不回縮,以達到控制環(huán)空安全的目的�；谌S井眼中管柱受力分析計算模型,根據(jù)環(huán)空安全工具的下入深度,確定了洗井結構中心管的抗拉強度,并對液控式環(huán)空安全封隔器的性能進行了分析驗證。該封隔器在42口注水井進行了現(xiàn)場應用,結果表明,完成坐封后的滑套多次洗井作業(yè),套壓始終為0 MPa,可有效保護海洋生態(tài)環(huán)境。研究認為,液控式環(huán)空安全封隔器不僅可以解決埕島油田現(xiàn)有環(huán)空安全封隔器無法解決的問題,也可以滿足其他海上油田安全環(huán)保開發(fā)的要求。
[Abstract]:In order to solve the problem that the existing annulus safety Packer has no well washing channel in Chengdao Oilfield, it is difficult to meet the requirements of development. On the basis of analyzing the advantages and disadvantages of domestic and foreign annulus safety tools, A hydro-controlled annular safety Packer with two separate fluid paths (control well washing and setting mechanism) was developed. The top liquid path of the Packer controls the washing mechanism, the hydraulic forced opening of the washing well, the hydraulic control pipeline is controlled by a double spring to control the sliding sleeve after the pressure relief, and the central liquid path is connected with the bottom liquid line, The Packer is controlled to sit at the same time as the stratified hydraulic Packer at the oil layer part of the pipe string, and the Packer is designed with a sitting and sealing mechanism. In case of emergency, the hydraulic control pipeline pressure releasing rubber cylinder will not be retracted to achieve the purpose of controlling the safety of the annulus. Based on the model of stress analysis of borehole string, the tensile strength of the central pipe of the washing well structure is determined according to the depth of the safety tool for annular hole, and the performance of the hydraulic control safety Packer of annular air is analyzed and verified. The Packer has been applied in 42 water injection wells. The results show that the sliding casing washing operation is completed many times after sitting and sealing, and the casing pressure is always 0 MPa, which can effectively protect the marine ecological environment. The study shows that the hydraulic control ring air safety Packer can not only solve the problems that the existing ring air safety Packer cannot solve in Chengdao Oilfield, but also meet the requirements of other offshore oil fields for safe and environmental protection development.
【作者單位】： 中國石化勝利油田分公司石油工程技術研究院;
【基金】：中國石化勝利油田分公司科技攻關項目“海上長效分層注水技術研究”(編號:YKC1403)資助
【分類號】：TE95

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本文編號：1865590