全空間電阻率法探測油藏邊界有限元模擬研究.pdf

1、；E978428長安大學(xué)碩士學(xué)位論文申請學(xué)位級別甄圭學(xué)科名稱地韭拯型生信息拉盔論文提交日飆一2壁逝趣￡攀論文管辯日飆蘭!絲生璽生且蘭日學(xué)位授予單位一：=___：疊塞蓋鱟答辯委員會主席：盔叢學(xué)位論文評閱人：查墜約盤生AbstractThispapertakedaJllayeredmediamodelasbackgIDundmodelandused矗niteelementmethodasn眥ericalsimulationmethod，in

2、applicationofthewholespaceresisitiVitymethodtoputthesourceint1espaceofunde唱roundandreceivesint11ewholespaceThentheelectricfielddistributionhasbeenanalyzedwhichofthepointcurremsourceint11elayeredmediamodelwhichexistofoilr

3、eservoirFinallvtIleanomalouscharacteristichasbeengainedwhichofelectricfielddistributionwitlltheoilresenroirbodyin山edi仃crentsituationThisprovidet11ereliablemeoreticalbaSistoexploretheoilreservoirboulldarybymeaIlsofresisit

4、ivitymethodFirstly，thep印erintroducestheconceptsoft11ewholespaceresisitivitymetllodaIldt11ewholespaceapparentresistivityARerthedeductionoffomula，thewholespaceapparentresistivitycaculatefb咖ulahasbeengainedSecondly，throught

5、Ilecalculationoftllefiniteelementmethod，t11ea110malouscharacteristicofelectricnelddistnbutjonandtheregulantyoftheoilreservoirbodyinthe1ayeredmedia0nt11eresultofthecalculation，theapparentresistivityanomalouscharacteristic

6、curvehasbeengainedwhichoft11eoilreservoirbodvint11emainsection，varieddepmplanar，verticalpmfilea11dhorizontalsectionindi?！痚remposition，inthecaSeofthepointcurrentsource’sdi旋rentpositionoftheoilreservoirbody(aboveorbeneath)

7、andthedi仃brentdistancetotheoilreservoirbodyAtthes鋤etimewhentheoilreservoirbodvhasthedifrerenttIlicknessandhasthedi任色rentTesisitiV時，the印paremresiStiv時a110malouscharacteristiccurvehasbeengainedwhichintlemainsection，venical

8、profileandhorizomalsectionindiⅡbrcntpositionFinally，aIlaIysisthedifl、eremanomalouscharacteristiccurve。theregulationhasbeengainedwhichofthea110malye行bctscausedbythevarietyofthepositionoft11epoilltsourceandmeoilreservoirbo

9、dyTheaIlomalythatthepointsourceabovetlleoilreservoirbodyismoreapparentthantllatundertheoilreservoirbodyAtthes鋤etime，it’snormala110malyofhighresistivityoftlleo訂reseⅣoirbodyintlleoilreseⅣoirbody’sunderspace，andit’snegative

10、anomalyinmeoilre毒ervoirbody’supspaceTheanomalyisweakwhent11eresistivitymtioofo訂reservoirandbackgroundis2，andthebiggertheratioist11emore印parentt11eanomalyisWhentlepointsource’positionisconfinedintheoilreservoir，theanomaly

11、’srangeisla唱er，sotheanomalyisapparentaccordinglyWhile，itwillnotsymmetrizewhenitiskeptdistancesfromthecentreforinstance，theanomalyisvarvweakwhenthepointsourcekeeps200mawayfromtheedgeoftheoiIreservoirAboveallprovidesbasist