true vertical depth 中文意思是什麼
true vertical depth
解釋
真垂井深-
Parameters can be interpreted through the method used in straight wells. after logging curves in horizontal wells are revised to true vertical depth, oil - bearing formation is evaluated through the comparison of wells combined with geological information. logging while drilling have great difference with ordinary cable logging especially in deviated holes and horizontal wells. comparison of cable logging and lwd carried out in different time indicates characters of mud invasion
實際解釋lwd資料時首先需對隨鉆測井資料進行預處理和標準化，然後從隨鉆測井、錄井資料中提取與巖性密切相關的參數，建立測井相-巖相統計模式，並採用灰色關聯識別方法實時判別地層巖性；採用直井的參數解釋方法進行隨鉆地層參數解釋；將水平井的隨鉆測井曲線從實際井深校正到垂直井深上，通過隨鉆測井資料與鄰井測井資料的對比解釋，並結合地質、錄井資料進行隨鉆地層含油氣性評價。 -
This paper, based on normalizing well logging data while drilling and correcting depth into true vertical depth and calculating reservoir parameters and etc, combining the practical ease of mobei oilfield, extracted logging and geological pattern characteristic of target oil - gas formation and geosteering mark formation, and used bp neural network and regressive analysis to create predicting mode of geosteering parameter to build relevant contrast curve ; adopted geometry geosteering method to fix on die drilling direction of bit upper and declination, the position in reservoir, to judge the real drilling case. all finely solved the problem to follow the geological target while drilling for three horizontal well these methods improve the drilling horizontal well ability by using the techniques to follow the geological target while drilling, and then it is convenient and practicable
本文在開展隨鉆測井資料的標準化和斜井校正及儲層參數解釋與含流體性質判釋等工作的基礎上，結合研究工區莫北油田的實際情況，提取了目標油（氣）層和導向標志層的測井地質模式特徵，並採用bp神經網路法和回歸分析法建立了地質導向參數的預測模型、構造了相應的對比曲線；採用幾何導向法確定鉆頭上下傾鉆進方向及其在目標層的位置，以判斷實際鉆進地層情況，很好地解決了研究工區三口水平井的隨鉆跟蹤地質目標的問題。 -
Tvd : true vertical depth
定向井的垂直深度
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