石油钻探技术
石油鑽探技術
석유찬탐기술
PETROLEUM DRILLING TECHNIQUES
2014年
6期
68-72
,共5页
任中豪%张文昌%朱新民%晋新伟%田文涛
任中豪%張文昌%硃新民%晉新偉%田文濤
임중호%장문창%주신민%진신위%전문도
标准井%不等精度%加权平均法%深度量值传递
標準井%不等精度%加權平均法%深度量值傳遞
표준정%불등정도%가권평균법%심도량치전체
standard well%unequal precision%weighted average method%measured depth transfer
为提高标准井深度量值传递的精度和可信度，利用多口深度标准井对新建标准井深度量值传递。对多口标准井传递的不等精度数据，依据每次传递的误差度对传递结果加权，采用加权平均法求取节箍深度最佳估计值。通过绘制标准节箍深度测量值的概率密度曲线，计算加权平均法处理结果和直接平均法处理结果的误差度，分析传递结果的可信度。分析表明，在标准节箍深度测量值的概率密度曲线上，多井传递的标准节箍深度值的位置接近曲线最高部位，而单井传递深度值偏离较多，多井深度量值传递结果可信度高于单井传递结果。误差度计算结果表明，加权平均法求取的最佳估计值可信度高于直接平均法求取的最佳估计值。研究表明，利用多口深度标准井对新建标准井深度量值传递、并采用加权平均法求取节箍深度的最佳估计值，提高了标准井深度量值传递的精度和可信度。
為提高標準井深度量值傳遞的精度和可信度，利用多口深度標準井對新建標準井深度量值傳遞。對多口標準井傳遞的不等精度數據，依據每次傳遞的誤差度對傳遞結果加權，採用加權平均法求取節箍深度最佳估計值。通過繪製標準節箍深度測量值的概率密度麯線，計算加權平均法處理結果和直接平均法處理結果的誤差度，分析傳遞結果的可信度。分析錶明，在標準節箍深度測量值的概率密度麯線上，多井傳遞的標準節箍深度值的位置接近麯線最高部位，而單井傳遞深度值偏離較多，多井深度量值傳遞結果可信度高于單井傳遞結果。誤差度計算結果錶明，加權平均法求取的最佳估計值可信度高于直接平均法求取的最佳估計值。研究錶明，利用多口深度標準井對新建標準井深度量值傳遞、併採用加權平均法求取節箍深度的最佳估計值，提高瞭標準井深度量值傳遞的精度和可信度。
위제고표준정심도량치전체적정도화가신도，이용다구심도표준정대신건표준정심도량치전체。대다구표준정전체적불등정도수거，의거매차전체적오차도대전체결과가권，채용가권평균법구취절고심도최가고계치。통과회제표준절고심도측량치적개솔밀도곡선，계산가권평균법처리결과화직접평균법처리결과적오차도，분석전체결과적가신도。분석표명，재표준절고심도측량치적개솔밀도곡선상，다정전체적표준절고심도치적위치접근곡선최고부위，이단정전체심도치편리교다，다정심도량치전체결과가신도고우단정전체결과。오차도계산결과표명，가권평균법구취적최가고계치가신도고우직접평균법구취적최가고계치。연구표명，이용다구심도표준정대신건표준정심도량치전체、병채용가권평균법구취절고심도적최가고계치，제고료표준정심도량치전체적정도화가신도。
In order to improve the accuracy and reliability of the measured depth transfer of a standard well ,the measured depths of many standard wells were transferred to a new standard well .On the basis of unequal precision of the data delivered by different standard wells ,transfer results were weighted according to the error degree of each pass to calculate the best estimate of collar depth by weighted average method . Through drawing the probability density curve of standard collar depth measurements ,the degree of error of processing the results between the weighted average method and direct average method was calculated to analyze the credibility of the transfer results .Analysis showed that ,on the probability density curve of standard collar depth measurements ,the position of depth value transferred by multi wells was close to the maximum probability density .However ,the transferred depth value of a single well was largely deviated . The results of analysis showed that the transmission reliability of multiple wells was higher than a single well .The error of calculation processing results showed ,the credibility of the best estimate of weighted av‐erage method was higher than the direct average method .Altogether ,using the measured depths transfer from the multi depth standard well to new standard well and calculating the best estimate of collar depth value by the weighted average method could improve the precision and reliability of the measured depth transfer of the standard well .
