A Semianalytical Model for Horizontal Wells With Improved Stinger Completion in Heterogeneous Bottomwater Reservoirs

Li, Haitao; Jiang, Beibei; Wang, Yongqing; Wang, Junchao; Jiang, Shasha

doi:10.2118/170251-pa

Cited by 6 publications

(3 citation statements)

References 4 publications

(12 reference statements)

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“…The gravel packing sand control technology cannot be implemented due to the difficulty of well completion and high operation cost due to the central control water technology. Moreover, the central control water technology is not suitable for water control in heterogeneous reservoirs, and the bottom water ridge cannot be balanced …”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Stimulation of Horizontal Wells Filled with Film-Coated Gravel in Deep-Sea Bottom-Water Gas Reservoirs

Zhi

Zhang

et al. 2022

ACS Omega

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Large gas reservoirs such as Yacheng and Lingshen have been discovered in the exploration of deep-sea gas reservoirs in the South China Sea in recent years. However, the existence of bottom-water and sufficient water energy in deep-sea gas reservoirs seriously affects the development effect of gas reservoirs. In order to effectively control water development of deep-seabed water gas reservoirs, it is proposed to fill water-resistant and breathable coated gravel outside horizontal wells for mining. Based on the preparation of modified coated gravel, this paper studies the resistance of coated gravel to friction damage, temperature damage, acid damage, pressure damage, and water-resistant performance of coated gravel. The results show that (1) the coated gravel coating has good resistance to friction erosion and acidification corrosion. The upper limit of temperature resistance is 250°, and the pressure resistance is 90.4 MPa. (2) The water resistance of the film-coated gravel packing layer decreases with the increase of packing layer permeability. (3) The film-coated gravel pack can reduce the water-phase flow ability of reservoirs, delay the bottom water ridging speed, increase the waterless gas development time of gas wells, and improve the final recovery of bottom-water gas reservoirs. The coated gravel has permeability and water resistance properties and can be used to voluntarily select water plugging in the coated gravel pack. This technology can develop a new technical idea for water control of deep-seabed water gas reservoirs.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Stimulation of Horizontal Wells Filled with Film-Coated Gravel in Deep-Sea Bottom-Water Gas Reservoirs

Zhi

Zhang

et al. 2022

ACS Omega

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“…e stinger technology can make the wellbore pressure distribution flat, but the uniform effect is not ideal. erefore, the unified problem of stinger technology should be studied in detail [14].…”

Section: Introductionmentioning

confidence: 99%

Horizontal Well Completion with Multiple Artificial Bottom Holes Improves Production Performance in Bottom Water Reservoir

Wang

Liu

2020

Mathematical Problems in Engineering

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The horizontal well completion with stinger is usually used to control the bottom water cone. Although the pressure profile and the inflow profile along the horizontal wellbore can be divided into two parts by the stinger, these profiles have not really flattened. In order to flatten the pressure distribution and inflow distribution further, it proposes a new technology. This new horizontal well has multiple artificial bottom holes (MABH) along the wellbore and it has application potential. In order to verify the effectiveness of MABH technology, a model of horizontal well completion with MABH was established, and the production performance of different water cone control technologies was analyzed: conventional horizontal well, stinger completion horizontal well, and MABH completion horizontal well. The results show that the MABH technology has more advantages than the stinger technology. The uniformity of pressure distribution of the 6-MABH horizontal well is 55% higher than that of the horizontal well with string technology, and the uniformity of inflow distribution is increased by 65.25%. At the same time, although the operation of MABH technology is very simple, it should follow a rule of MABH installation: the position of the first MABH should be set at 242.5 m from the heel hole of the horizontal wellbore, and the other interval is 92.4 m.

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“…Because of reservoir heterogeneity and the “heel-toe” effect, the problems of water coning, short water breakthrough time, and imbalanced production profiles have become the major difficulties that restrict the development of horizontal wells (Figure ). The six main methods of solving these problems are the maximum water-free production rate, annular zone isolation using chemicals, , variable density perforation, , dual horizontal well completion, − stinger completion, , and inflow control device (ICD)/automatic inflow control device (AICD) completion technology. − Figure shows a schematic of ICD/AICD technology, which has been the most popular method in Chinese oil fields over recent years.…”

Section: Introductionmentioning

confidence: 99%

A Novel Automatic Inflow-Regulating Valve for Water Control in Horizontal Wells

Cui

et al. 2020

ACS Omega

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Horizontal wells are prone to water coning and imbalanced inflow profile problems because of reservoir heterogeneity, the “heel-toe” effect, and different water avoidance heights. To solve these problems, an automatic inflow control device (AICD) technology is developed, as the traditional inflow control device (ICD) technology is frequently invalid after water breakthrough. In this study, a novel water control tool, an automatic inflow-regulating valve (AIRV), was designed to balance inflow profiles before water breakthrough and to limit water inflow after water breakthrough. With the use of a movable part, the AIRV can quickly distinguish fluids and limit the water output based on differences in fluid properties and the swirling flow principle. The water control efficiency and ability of the AIRV were simulated and optimized using computational fluid dynamics (CFD) software and verified experimentally using a water control testing system specially designed for the AIRV. We observed that (1) the total water force on the movable component of the AIRV is notably larger than that of oil because the swirling intensity of water is significantly higher than that of oil; moreover, the force directions of water and oil are opposite to each other. (2) The AIRV is sensitive to the flow rate and fluid viscosity but not to fluid density. (3) A higher water cut results in a higher AIRV pressure loss. The results of the CFD simulation and experimental test demonstrated that the AIRV has a significant water control ability and efficiency, particularly under conditions of a high production rate and high water cut. Thus, the AIRV can be used to enhance the control of water inflow before and after water breakthroughs in horizontal wells.

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A Semianalytical Model for Horizontal Wells With Improved Stinger Completion in Heterogeneous Bottomwater Reservoirs

Cited by 6 publications

References 4 publications

Experimental Study on Stimulation of Horizontal Wells Filled with Film-Coated Gravel in Deep-Sea Bottom-Water Gas Reservoirs

Experimental Study on Stimulation of Horizontal Wells Filled with Film-Coated Gravel in Deep-Sea Bottom-Water Gas Reservoirs

Horizontal Well Completion with Multiple Artificial Bottom Holes Improves Production Performance in Bottom Water Reservoir

A Novel Automatic Inflow-Regulating Valve for Water Control in Horizontal Wells

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