Study On Reservoir Evaluation And Adjustment Of Injection To Producing In Upper ES3Segment Of Wen33Fault Block

The upper ES3segment of Wen33fault block located at the Henan ProvincePuyang County within the boundaries, are situated at the Yellow River wash plain, thetopography are smooth, the areal structure remains located at the east Pu hollow centralupheaval zone article constructs belt’s north west, is south the article the rift valleynorthwest part. Oil deposit burying depth-2800^-3300m, the oil layer mainly33breaks the building store height spot distribution along the article. Has the followingproblem after20year development oil deposit: First, because the level non-isotropicmakes the water drive use condition to be uneven, the stratum absorbing waterdifference is very serious, the water drive use degree is very low; Second, the reservoirnature was bad, after passing through the encryption well pattern, has realized thewater-injection development, but because the irrigation pressure was high, has realizedthe highly effective water-injection development with difficulty.In order to enhance the water drive use degree, the improvement oil deposit’sdevelopment effect, the present paper in core analysis’s foundation, material and so oncomprehensive utilization geology, oil well logging, production performance, thedevelopment reservoir deposits micro, the reservoir nature, the reservoir anisotropismresearch, summarizes the reservoir mop rule as well as the flooding rule. And toclassifies the reservoir starting pressure gradient to conduct the research, the unionsees the water rule to summarize the phase splitting belt note effectively to pick thewell pattern the reasonable disposition. Obtains the following research:1、The deposition characteristic analysis indicated that the home court is theshallow lake--Under half deep lake background control delta deposit environment.The Delta plain subfacies do not grow, the delta front is its main reservoir, this area submarine distributary channel growth, is its main sedimentary facies belt, the thingsource mainly comes from NW, NNE and the NNW direction, the individual unitoriginates in SW approaches.2、According to the reservoir natural well logging interpretation result, eachflowing unit reservoir porosity is13.44¹7.26%, is15.02%equally, the penetrationcoefficient for6.68⁸6.98×10^-3μm², the average for32.7×10^-3μm², the reservoirnature is generally speaking bad, for low-infiltrates the oil deposit especially lowly.the penetration coefficient is bigger than30×10^-3μm², the predestined affinitygranulated substance penetration coefficient is smaller than20×10^-3μm², the fargranulated substance penetration coefficient is smaller than10×10^-3μm².3、The delta continent predestined affinity subfacies reservoir’s anisotropism, iscontrolled in distributary channel granulated substance body’s three Uygur distributes,and has decided in the level, the level and the plane anisotropic characteristic, thushad decided the flooding rule.In level penetration coefficient of variation0.24⁰.93, smaller than0.5accountsfor35.3%,0.5-0.7account for29.4%, bigger than0.7to account for29.3%; In thelevel the penetration coefficient advance coefficient is1⁵.84; In the level thepenetration coefficient grading is3²01. Indicates in this area reservoir level theanisotropic degree for medium. The different type bedding, is various to the reservoiranisotropism influence. This area main growth has the massive bedding, the crossstratification, the current bedding and the horizontal bedding, the massive beddingoccupies the majority, in the massive bedding level the material, the component andthe structure homogeneity are good, the sandstone is relatively thick, the penetrationcoefficient to be relatively high, the flooding to be even.The oil layer level the penetration coefficient of variation≤0.5accounts for24.39%,0.5<Vk≤0.7to occupy56.1%,>0.7to account for19.51%, Varioussubzones nature is different, absorbing water and produces the fluid ability to vary,therefore multi-oil layer oil deposit when gathers the note gathers picks, the levelcontradictory is getting more and more prominent.Various subzones plane non-isotropic obvious, the distributary channelgranulated substance body’s distribution had decided various subzones planeanisotropism, the granulated substance body distribution mainly deposits the microcontrol, the reservoir porosity, the penetration coefficient quality with the granulated substance body growth degree consistently, the submarine distributary channelgranulated substance body most grows, next for levee, penetration coefficientdirectivity with river course’s direction basic consistent, namely seeps the belt highlocated at the river course on. The river course mainstream line granulated substancebody many are the strong flooding, the moisture content is high, river course flanknext best, but other deposit the micro granulated substance body’s use degree to below, in the tendency the performance is “the river course pours water, the flankextraction” the development effect is good as well as irrigation one way effectcharacteristic.4、Through the reservoir starting pressure gradient research, the comprehensivefundamental research chart version as well as sees the water rule effectively thesummary, the phase splitting belt note picks the well pattern optimization dispositionthe reasonable note to pick the well spacing.