石油钻采工艺
石油鑽採工藝
석유찬채공예
OIL DRILLING & PRODUCTION TECHNOLOGY
2012年
6期
1-4
,共4页
李昌盛%赵金海%杨传书%张弛%徐术国
李昌盛%趙金海%楊傳書%張弛%徐術國
리창성%조금해%양전서%장이%서술국
钻头工作效率%机械比能%抗压强度%软件
鑽頭工作效率%機械比能%抗壓彊度%軟件
찬두공작효솔%궤계비능%항압강도%연건
bit working efficiency%mechanical specific energy%confined compressive strengh%software
为了实时评估钻头的工作效率,增加钻井施工的可控性,对钻头工作效率实时评估方法进行了研究.基于前人提出的机械比能理论,对钻头扭矩进行简化处理并提出了岩石有侧限抗压强度理论,给出了相关计算公式,利用各参数间的相关性,反推出钻速方程,达到了通过邻井钻井数据预测钻速的目的.根据以上理论模型,开发研制了相关软件,实现综合利用测井数据、岩石力学参数、机械比能和机械效率等多类连续剖面科学评估钻头性能,并采用现场数据进行了验证.结果表明:该模型计算出的钻头扭矩、岩石有侧限抗压强度和机械效率等参数很好地反映了现场钻头运行情况和磨损程度,基本满足了钻井施工的要求.所研究的评估方法对钻头优选、钻井实时模拟决策和钻后分析具有指导性意义.
為瞭實時評估鑽頭的工作效率,增加鑽井施工的可控性,對鑽頭工作效率實時評估方法進行瞭研究.基于前人提齣的機械比能理論,對鑽頭扭矩進行簡化處理併提齣瞭巖石有側限抗壓彊度理論,給齣瞭相關計算公式,利用各參數間的相關性,反推齣鑽速方程,達到瞭通過鄰井鑽井數據預測鑽速的目的.根據以上理論模型,開髮研製瞭相關軟件,實現綜閤利用測井數據、巖石力學參數、機械比能和機械效率等多類連續剖麵科學評估鑽頭性能,併採用現場數據進行瞭驗證.結果錶明:該模型計算齣的鑽頭扭矩、巖石有側限抗壓彊度和機械效率等參數很好地反映瞭現場鑽頭運行情況和磨損程度,基本滿足瞭鑽井施工的要求.所研究的評估方法對鑽頭優選、鑽井實時模擬決策和鑽後分析具有指導性意義.
위료실시평고찬두적공작효솔,증가찬정시공적가공성,대찬두공작효솔실시평고방법진행료연구.기우전인제출적궤계비능이론,대찬두뉴구진행간화처리병제출료암석유측한항압강도이론,급출료상관계산공식,이용각삼수간적상관성,반추출찬속방정,체도료통과린정찬정수거예측찬속적목적.근거이상이론모형,개발연제료상관연건,실현종합이용측정수거、암석역학삼수、궤계비능화궤계효솔등다류련속부면과학평고찬두성능,병채용현장수거진행료험증.결과표명:해모형계산출적찬두뉴구、암석유측한항압강도화궤계효솔등삼수흔호지반영료현장찬두운행정황화마손정도,기본만족료찬정시공적요구.소연구적평고방법대찬두우선、찬정실시모의결책화찬후분석구유지도성의의.
A novel approach is studied for assessing real-time bit working efficiency and increasing controllability of drilling. Based on the previous mechanical specific energy theory, bit torque calculation is simplified and the confined compressive strength and related formula is proposed. In addition, the rate of penetration equation is deduced based on the correlation between parameters. The software of assessing real-time bit working efficiency is developed on the basis of the theoretical models above and is tested through field data. It can estimate bit performance by making use of log data, rock mechanical parameters, MSE, and mechanical efficiency. The results show that the predicted bit torque, CCS, EFF and bit performance are consistent with drilling field conditions and basically meet the require-ment of drilling engineering. The method is instructive and meaningful to bit optimization, real-time drilling decision and analysis after drilling.