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1、油田開發(fā)是一個從前期鉆探，經(jīng)過生產(chǎn)開發(fā)，到后期減產(chǎn)的全過程，表現(xiàn)在油田產(chǎn)量的變化上必定要經(jīng)過產(chǎn)量上升■產(chǎn)量穩(wěn)定■產(chǎn)量下降的全過程。當(dāng)油田開發(fā)進(jìn)入產(chǎn)量遞減階段以后，無論人們采取何種措施，都無法改變產(chǎn)量下降的趨勢。產(chǎn)量遞減階段不同的遞減規(guī)律對產(chǎn)量和最終采收率的影響不同，研究它們的遞減規(guī)律，對預(yù)測油出未來產(chǎn)量變化和最終的開發(fā)指標(biāo)及以后開發(fā)措施的調(diào)整，都有著重要的意義。本文主要對油氣田產(chǎn)量遞減的遞減模型、遞減類型進(jìn)行簡要的介紹，同時對目前常用的遞減類型判斷方法（圖解法、試湊法、曲線位移法、二元回歸法、水驅(qū)曲線法、相關(guān)系數(shù)比
2、較法等）進(jìn)行了比較說明。分析了汕田生產(chǎn)開發(fā)過程中產(chǎn)量遞減規(guī)律，并從理論方面對影響產(chǎn)量遞減規(guī)律的因素進(jìn)行了分析，推導(dǎo)出相應(yīng)的公式，計算出各個指標(biāo)的彩響權(quán)重，結(jié)合油田實際，提出了減緩產(chǎn)量遞減率的途徑。系統(tǒng)的分析了各類區(qū)塊的產(chǎn)量變化規(guī)律，利用低滲透的滲流理論，推導(dǎo)出低滲透油藏產(chǎn)量遞減方程。針對不同類型區(qū)塊，給出產(chǎn)量預(yù)測的優(yōu)選模型。關(guān)鍵詞：產(chǎn)量遞減；規(guī)律；類型判斷；遞減率；影響因素AbstractOilfielddevelopmentisfromtheearlyafterdrilling,productionanddeve
3、lopmenttothewholeprocessofpostproduction,performancechangesinoilyieldofthewholeprocessofproductionmustgothroughrose-stableyield-productiondecline.Whentheoilfieldhasenteredthestageofproductiondecline,whatevermeasurestotake,cannotchangethedeclineinoutput.Theneur
4、alnetwork-geneticandgrayrelationalanalysisforexampledecreasingthetypeofnewmethodsofresearchprogress,andfutureresearchdirections?Inthispage,therelevantlawofdiminishingoilandgasfieldproduction(basicconcept,thedecrementmodel,decreasingtype)forabriefintroduction,t
5、hecurrentcommonlyuseddecreasingthetypeofjudgment(graphicmethod,bytrialanderror,thecurvedisplacementmethod,thebinaryregressionmethod,waterfloodingcurvemethod,thecorrelationcoefficientmethod)wereintroducedandevaluation.Thispaperanalysetheproductiondeclinelawinoi
6、lfieldandtheinfluencingfactorsoftheproductiondeclinelaw,establishrelevantequation,andworkouttheweightofeachindex.Combiningwiththerealityinoilfield,weputforwardtheapproachtoslowerproductiondeclining,analysethevariationofproductionforeachtypeofblockbythenumbers.
7、Accordingtopercolationtheoryinlowpermeabilityreservoir,derivatedtheproductiondecliningequationoflowpermeabilityreservoi匚Theoptimizingpatternsareworkedoutaimedatdifferenttypesofblock.Keywords:productiondecline;laws;type-determination;declinerate;effectelement目錄
8、1前言11」設(shè)計論文的目的、意義11.2課題發(fā)展概況及存在的問題11.3本課題的指導(dǎo)思想21.4應(yīng)解決的主要問題22產(chǎn)量遞減規(guī)律32.1基礎(chǔ)概念32.1.1遞減率32.1.2遞減系數(shù)32.2產(chǎn)屋遞減模型4221產(chǎn)量遞減模式42.2.2Arps產(chǎn)量遞減預(yù)測模型52.2.3Li-Horne產(chǎn)量遞減預(yù)測模型52.3產(chǎn)量遞減規(guī)律62.3.1產(chǎn)量遞減的研究方法及步驟6
