The Performance Assessment Of Deep Profile Control System For N Oil Field

This article take the N oil field as the research aim sub-area, the N oil field has the intrinsic fracture, the water-injection development effect misses extremely, the existence pours water along the fracture orientation flees the class, the water drive use degree lowly, anisotropism serious, the level contradictory prominent and so on the questions, this oil field once adopted the accent to split the measure, but had the term of validity short problem, the effect is not obvious. After generalized analysis N oil field current existence question and reservoir, fluid and so on natural the parameters and the mining situation believed that, the weak gelatin depth portion accent drives the technology is suitable in the N oil field steady oil controls the water technology.The author in the consult literature foundation, summarized the weak gelatin accent to drive the superiority which the action mechanism and the contrast tradition polymer drove, and simulated N oil field conditions and so on oil field temperature, hardness index, fluid characteristic, reservoir characteristic, screened through the massive rooms in tests and appraises the experiment, had determined suited drives the system in the N oil field depth portion accent is composed by 19,000,000 molecular weight polymer and organic chromium crosslinking agent JL-3, carried on the stable appraisal experiment to the system, the experimental result had indicated this weak gelatin system had the good heat-stable performance under the N oil field condition. Simulated the N oil field anisotropism to carry on three core sample parallel trap experiment, promulgated the gelatin system selectivity to enter the high filter layer the characteristic. Uses three core sample parallel models and the large-scale dull model carries on the accent to drive the experiment, enhances the recovery ratio value respectively to achieve 16.01% and 18.29%, indicated the depth portion accent drives the technology to be able to enhance the recovery ratio obviously; Carries on the friction coefficient and the residual resistance factor determination experiment, promulgated the friction coefficient to increase along with the penetration coefficient reduces, the residual resistance factor the rule which increased along with the core sample penetration coefficient increases. The accent drove the medicinal preparation injection rate exchange to drive the effect the influence experiment to obtain the low speed to pour into the accent drove when the medicinal preparation compared to pours into high speed the accent drove when the medicinal preparation enhances the recovery ratio effect good conclusion, when instructed the scene accent drove the medicinal preparation, must strictly control the good injection rate. The depth portion accent drives the dynamic characteristic research experiment result to indicate the depth portion accent drives to be able to cause the liquid flow to change, the accent drives the medicinal preparation to be able to continue the forward motion along with the following injection fluid in the core sample, manifests “stops up does not die” characteristic. The recommendation accent drives the medicinal preparation formula is: 19,000,000 molecular weight polymer, Cp=1500mg/L~2400mg/L, gathers hands over the ratio is 1:1.7, the slug size is 0.3PV.The research results drove the technology for the weak gelatin accent to build the solid foundation in the N oil field mine application.