石油钻探技术
石油鑽探技術
석유찬탐기술
PETROLEUM DRILLING TECHNIQUES
2014年
2期
57-63
,共7页
两性离子聚合物%钻井液%实验室试验%现场应用%临盘油田
兩性離子聚閤物%鑽井液%實驗室試驗%現場應用%臨盤油田
량성리자취합물%찬정액%실험실시험%현장응용%림반유전
zwitterionic polymer%drilling fluid%laboratory test%field application%Linpan Oilfield
临盘油田近些年油气井钻井多应用PA M钻井液，但该钻井液在使用中存在抑制能力不足、钻井液性能稳定时间短、防塌效果有限、使用成本较高等问题。为此，在借鉴国内外先进技术的基础上，引进了较为先进的两性离子聚合物HRH ，通过溶解试验、絮凝试验、抑制性和配伍性试验对其进行了评价，优化了原有钻井液配方，研制出一种两性离子聚合物 HRH钻井液。室内试验表明，该钻井液流变性能稳定，动塑比保持在0.5左右，耐温能力达150℃以上，抑制性优于PA M钻井液，其岩心渗透率恢复率高达90％以上，且与润滑剂复配后泥饼黏附系数小于0.1。在临盘油田295口井的现场应用表明，该钻井液的流变性、滤失性、润滑性和抑制性等均优于PAM钻井液，平均井径扩大率控制在10％以内，井下故障率由2.57％降至1.64％，平均机械钻速由20.58 m/h提高至23.02 m/h ，具有良好的经济效益。由此可知，两性离子聚合物 HRH钻井液能解决PAM钻井液所存在的问题，在临盘油田具有推广应用价值。
臨盤油田近些年油氣井鑽井多應用PA M鑽井液，但該鑽井液在使用中存在抑製能力不足、鑽井液性能穩定時間短、防塌效果有限、使用成本較高等問題。為此，在藉鑒國內外先進技術的基礎上，引進瞭較為先進的兩性離子聚閤物HRH ，通過溶解試驗、絮凝試驗、抑製性和配伍性試驗對其進行瞭評價，優化瞭原有鑽井液配方，研製齣一種兩性離子聚閤物 HRH鑽井液。室內試驗錶明，該鑽井液流變性能穩定，動塑比保持在0.5左右，耐溫能力達150℃以上，抑製性優于PA M鑽井液，其巖心滲透率恢複率高達90％以上，且與潤滑劑複配後泥餅黏附繫數小于0.1。在臨盤油田295口井的現場應用錶明，該鑽井液的流變性、濾失性、潤滑性和抑製性等均優于PAM鑽井液，平均井徑擴大率控製在10％以內，井下故障率由2.57％降至1.64％，平均機械鑽速由20.58 m/h提高至23.02 m/h ，具有良好的經濟效益。由此可知，兩性離子聚閤物 HRH鑽井液能解決PAM鑽井液所存在的問題，在臨盤油田具有推廣應用價值。
림반유전근사년유기정찬정다응용PA M찬정액，단해찬정액재사용중존재억제능력불족、찬정액성능은정시간단、방탑효과유한、사용성본교고등문제。위차，재차감국내외선진기술적기출상，인진료교위선진적량성리자취합물HRH ，통과용해시험、서응시험、억제성화배오성시험대기진행료평개，우화료원유찬정액배방，연제출일충량성리자취합물 HRH찬정액。실내시험표명，해찬정액류변성능은정，동소비보지재0.5좌우，내온능력체150℃이상，억제성우우PA M찬정액，기암심삼투솔회복솔고체90％이상，차여윤활제복배후니병점부계수소우0.1。재림반유전295구정적현장응용표명，해찬정액적류변성、려실성、윤활성화억제성등균우우PAM찬정액，평균정경확대솔공제재10％이내，정하고장솔유2.57％강지1.64％，평균궤계찬속유20.58 m/h제고지23.02 m/h ，구유량호적경제효익。유차가지，량성리자취합물 HRH찬정액능해결PAM찬정액소존재적문제，재림반유전구유추엄응용개치。
PAM drilling fluid has been commonly used in Linpan Oilfield in recent years ,but this drill-ing fluid has shortcomings such as poor inhibition ,short stable time ,limited anti-sloughing property and higher cost ,etc .In order to solve these problems ,the advanced zwitterionic polymer HRH has been intro-duced based on the advanced techniques at home and abroad .The formula of the drilling fluid was optimized through solubility ,flocculation ,inhibition and compatibility test on HRH .The laboratory tests showed that the drilling fluid had good rheological property ,with the ratio of yield value to plastic viscosity at around 0.5 ,temperature resistance of above 150 ℃ ,better inhibition than PAM drilling fluid ,and the core permea-bility recovery rate of over 90% .When it was combined with lubricant ,the mud cake adhesion coefficient could be lowered to less than 0.1 .The HRH drilling fluid has been used in 295 wells in Linpan Oilfield ,the results showed that the rheological property ,filtration ,lubrication and inhibition of the HRH drilling fluid were all better than that of PAM drilling fluid .After using the HRH drilling fluid ,the average hole diame-ter enlargement ratio was kept under 10% ,the downhole complex accidents was reduced from 2.57% to 1.64% ,the penetration rate increased from 20.58 m/h to 23.02 m/h ,w hich together resulted in good eco-nomic benefits .Thus it could be seen this drilling fluid which could solve all the problems of PAM drilling fluid ,should be popularized in Linpan Oilfield .
