The Fine Description Of Reservoir The Nether S2, Dalujia Area, Linpan Oil Field

Considering the geological characteristics and development of heterogeneous block reservoir Dalujia area, Linpan oil-field, applying exploration and development data, guided by the theory of petroleum geology, sedimentology, reservoir geology, development geology, and reservoir engineering, adopting the technical means of high-resolution sequence stratigraphy, fine description and distribution of the remaining hydrocarbon of nether S2 in Dalujia oil-field have been studied, a development is proposed.Based on the research of the tectonic formation and evolution, applying computer and 3D visual modeling technology, the fine structural of nether S2 has been studied, a fine structural model and a large-scale, small gap contour microtectonic graph are presented, the recognizing of the minor fault growing distribution and low-amplitude microtectonic are discussed. Analyzing the background and characteristics of sedimentary and core, the micro facies of the formation are studied. The conclusion is that this area is at the frontal delta zone, the submerged distributary channel, the submerged interdistributary channel, the channel - mouth bar, the far sand bar and the interbar. The main reservoir sand is river sand and the rest is of channel and sand sheet. Applying high resolution sequence stratigraphy, the high resolution sequence stratigraphy hack is concluded. Comparing the framework profile, nether S2 is divided into five sand units and 43 reservoir beds. This is very helpful for fine reservoir description. The reservoir rock physics property is analyzed with a lot of maethods such as analyzing diagenesis, granularity, general reservoir properties and watching core and slice, etc. The Consolidation and cementation affect storage capability greatly, and the dissolution contribute great to the porosity, the Chipping mineral including mica strengthen anisotropism, complex hole structure, debase storage capability. The whole appraisement is given to the dalujia area. Considering the high shale content, poor rock difference and litho-electric, difficult physics interpretation in this area , a better reservoir interpretation model for this area is presented by using the calibrated logging and single well sectional physic interpretation. Analyzing the attributes of the formation, the heterogeneous interpretation is studied. The conclusion is nether S2 is strongly heterogeneous for intra-layer, strongly plane of middle permeability, the inter-layer treatment is the main task for development. The rich source rocks, favorable migration and accumulation conditions,as well as good reservoir-cap rock combinnations have led to the formation of the oil and gas reservoir forming and the distribution of oil and water.Calculating the geology reserves, the flow unit is evaluated on reserves and the quality and semi-quantity research on macro remaining hydrocarbon is discussed. The micro-remaining hydrocarbon distribution, control factors and formation mechanism are also studied. This research suggested a way of remaining hydrocarbon distribution and development by fine reservoir description for heterogeneous thick block reservoir at high water cut, this technology is very effective to improve the development and (?)overy for nether S2 and also very helpful for the similar reservoir development.