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 Wysłany: Sob 3:12, 13 Lis 2010 Temat postu: uggs ireland In high permeability reservoir fractu |
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, The high permeability of reservoir fracturing mechanism
In good condition but the strength is not too high, within a specified time to gel breaking in the formula. The basic formula is the primary result: 0J5HPG + D. 4 ~ O. 5B, cross-linking ratio of 100:3 ~ 100:4. Other auxiliary additives on the rheological properties of fracturing fluid had no effect. On this basis, selected 0.5HPG +0.4 B,[link widoczny dla zalogowanych], cross-linking ratio of 100:4 and 100:3 samples of the two formulations rheological performance test carried out the rheological parameters obtained for a few blocks of high-l7 El well off the fracturing simulation, the simulation results show that the rheological properties meet requirements of de-fracturing. 2.4 after pressure during fracturing and production of the wells in the April 3, 1996 construction, plus quartz sand 10.33m. , Paint sand o. 5m. . Fracturing fluid with a 43m, the construction process of the Bottom of the pressure changes shown in Figure 4. Curve of the figure showed obvious features of the pressure off the sand. The well is put into operation from April 9, after the first month of operation the average daily oil production 6. it, without water. The first month average daily oil production 5.9t, the first three-month average daily oil production 5.8t, not water. First three months of cumulative oil 500t,[link widoczny dla zalogowanych], fracturing increase yield and pressure before and after the production of pressure compared in Figure 5. Yong Time (rain) produced the same-resistant (d) Figure 4 applied on the end of the process I a} rJF three changes - rip tertiary children 5 Shi Shi Jin j I compared to July 1997, the well fracturing is still valid and oil sands production process could not have been cumulative oil nearly 2000t. The remaining three I = I,[link widoczny dla zalogowanych], the high permeability reservoir fracturing wells, in the production process, not a sand reservoir, an increase of 2 to 4 times multiple of a period of about a year. El total yield of crude oil wells three more than 3000t. The results indicate that with in the mechanism of high-permeability reservoir fracturing fracturing fracturing design and construction guidance to be successful. Meanwhile, the construction of four successful wells, but also with the mechanism guiding the other, the high permeability reservoir fracturing sand provides a valuable experience. 5 No. 1 Xie Gui science and other: in the mechanism of fracturing high permeability reservoir of 573 conclusions (1) in middle and high permeability reservoir bilinear form of movement to establish clear, crack conductivity must be large enough , while the wing crack length (L,) should be relatively short. Dimensionless fracture conductivity because of the greater role in pressing the more obvious after the bilinear. So, in high permeability reservoir fracturing,[link widoczny dla zalogowanych], special requests to generate crack width shorter. (2) produce high conductivity fracture cracks on the control of sand production trends in the role of performance in three key links: to prevent or slow down the destruction of rock structure, reducing erosion of fluid particles on the formation and carrying capacity, sand filling cracks on the formation of particles with a bridging role in the formation of three fracture combined effect of the comprehensive mechanism of sand. Meanwhile, the first two mechanism for the production process to reduce formation of deep damage is also an important role, (3) with the fracturing of low permeability reservoirs than in middle and high permeability fractured reservoir engineering in the rotation, fracturing fluid In the medium and high permeability reservoirs in the filter loss and damage to the oil reservoir is different from the low permeability of the filter in the loss and damage, therefore, fracturing, high permeability reservoir to re-design, screening fracturing fluid formulation, the fracturing fracturing fluid performance meets the design requirements. (4), the high permeability reservoir fracturing sand is a new, integrated technology with special effects, has entered a mature stage in a foreign country and take a good application results. The method used in the high Qing oil field has been successfully fracturing four wells, significant effect of increasing oil sand, is laid the foundation for further application. References 1RichardADh ±. EnhancingProd ~,[link widoczny dla zalogowanych], ctivitybyFracturingH song PermeabilityReservoir-OGJ ・ June2O'1994'226 ~ 229.2Fracl ~ CCompletionServiees-stimulatitmandSandControlTechniquesforHigh-PermeabilityOilandGasWells. Halh'burmnEnergyServies ・ 1994.3R ~ mersDRateLHi song PermeabilityFracturingatProdhoeBayAlaska. SPE23777.4Schoff ~ rmABat summer 1. OptimizingFractureStimulationsintheMearthurRirerfield. SPE22149. This editor Weng home
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