Zhong18 wellblock of Fengcheng oilfield developed with low permeability interlayer and had strong heterogeneity, which caused steam chamber conventional assisted gravity drainage (SAGD) process cannot extend lengthwise continuously serious heat loss. To address this problem, a method acid fracturing SAGD is proposed to enhance the oil improve recovery. Based on herringbone well being used in we...

Horizontal well and large-scale hydraulic fracturing are the main technical means for tight gas development at present. However, reservoirs characterized by strong heterogeneity, different types of Wells have production characteristics pressure propagation laws. In view above problems, based on physical reservoir reconstruction evaluation in GAS Reservoir A Sichuan Basin, three fracture models ...

This paper proposes a method for quantitative integration of seismic (elastic) anisotropy attributes with reservoir performance data as an aid in characterization of systems of natural fractures in hydrocarbon reservoirs. This method is demonstrated through application to history matching of reservoir performance using synthetic test cases. Discrete Feature Network (DFN) modeling (Dershowitz et...

Making an accurate estimate of the CO2 storage capacity before commencement a carbon capture and (CCS) project is crucial to design feasibility investigation. We present herein numerical modelling study on in depleted gas reservoirs. First, we show simple volumetric equation that gives reservoir, which considers same volume CH4 at reservoir pressure temperature conditions produced from reservoi...

The pore structure of shale gas reservoirs has strong heterogeneity, and the flow mechanism in multiscale media is complex. fracture network hydraulic fracturing significantly affected by reservoir situ stress, rock mechanical properties, natural distribution. At present, there no efficient accurate inversion method for networks. Accurately describing morphology capacity distribution induced an...

The objective of this work is to innovatively apply the boundary element method (BEM) as a general modeling strategy deal with complicated reservoir problems, especially those related heterogeneity and fracture systems, which are common challenges encountered in practice engineering. transient flow behaviors reservoirs containing multi-scale heterogeneities enclosed by arbitrarily shaped bounda...

Production performance of heavy oil deposits in Xinjiang oilfield developed by vertical-well cyclic steam stimulation (CSS) is increasingly challenged reservoir heterogeneity, which comprised original sedimental heterogeneity and steam-induced heterogeneity. In order to understand the impacts high-speed injection conformance, strategies maximize swept volume, a series experiments were designed ...

By numerical simulation, a bilateral horizontal well is placed in a crude oil reservoir with bottom water. The upper branch which is located near the top of the reservoir is for producing and the lower branch which is located near the oil water contract is for nitrogen foam injecting. Packers are used to control the alternation between productions and injections. When water cut of the upper bra...

The impact of heterogeneity induced mixing between the injected low salinity water and the high salinity connate water is investigated in secondary low salinity waterflooding (LSW). Although LSW has proved to be a promising EOR process in laboratory experiments and field trials, its efficiency can be altered due to mixing with in situ higher salinity connate water. This mixing is caused by mole...

BACKGROUND The reservoir of Plasmodium infection in humans has traditionally been defined by blood slide positivity. This study was designed to characterize the local reservoir of infection in relation to the diverse var genes that encode the major surface antigen of Plasmodium falciparum blood stages and underlie the parasite's ability to establish chronic infection and transmit from human to ...