大庆肇州油田水平井射孔优化技术.pdf

:研究生学位论文摘要摘要大庆肇洲油田位于松辽盆地北部中央坳陷区三肇凹陷,油层地质特征复杂,断层比较发育,属于低渗透构造岩性油藏,具有含油面积大、有效厚度薄、储层物性差、储量丰度低、储层非均质性强,天然裂缝不发育等特点。这部分储量在常规直井开发条件下经济效益差,为了使这部分储量能经济有效动用,在肇州油田南部开展了特低丰度葡萄花油层水平井开发设计和试验,需要开展水平井射孔优化技术研究,建立一套水平井产能预测和优化方法,保证低渗透油层产能开发的需要。为了解决水平井射孔方案设计、射孔穿深问题以及水平井复合射孔问题。综合油气井渗流理论,建立了水平井射孔产能计算方程,研制了95型水平井射孔器。利用项目研究成果可进行水平井的射孔方案设计及水平井的深穿透常规射孔和复合射孔,可创造较大的经济效益和社会效益。通过现场应用表明,通过对比分析得出在肇洲油田葡萄花油层水平井应用95水平井射孔器完井比采用89水平井射孔器完井在投产初期产液强度有一定增强,有效提升水平井射孔完井效果。关键词:肇州油田;复杂油层;地质特征;水平井;射孔;优化技术浙江人学硕4:0t:究生学位论文摘要 ABSTRAC T Daqing Zhaozhou oilfield is located atthecentral depression area--Sanzhao depression innorthSongliao features plex and belongs to low permeability structure lithologic has suchcharacteristics as bigoil—bearing area,thin effective thickness,poor reservoir properties,low reserve abundance,powerful reservoir heterogeneity and nodeveloping benefits inthispart reserves isvery poor inconditions of conventional development orderto put to use thispart reserves cost—effectively,we develop horizontal well exploitation design and examination about very low abundance Putaohua reservoir insouth Zhaozhou isnecessary todevelop horizontal wellperforatingoptimization technique and establish aset offluids rateforecastandoptimization method about horizontal can insure theneedof deliverability development inlowpermeability reservoir. Inorder toresolve theproblem about horizontal wellperforation scheme design and ration pound perforation,this thesissynthesize well filtrationtheory,establish horizontal well perforation deliverability calculation equation and develop 95 mould horizontal well perforation e can progress horizontal well perforation scheme design and deep ration traditional perforation pound can produce larger economic benefits and socialbenefits. Through field application parative analysis,using 95 mould horizontal well perforation gun,the pr