First Horizontal Water Injectors in Prudhoe Bay Field, Alaska

Bodnar, D.A.; Clifford, Peter; Isby, John; Lane, A.C.; Loveland, Robert E.; Seymour, Lynné; Urban, Delphine; Shultz, Steve; Walz, Gregg

doi:10.2118/35588-pa

Cited by 10 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A method of injection profile control which does not rely on active intervention but instead uses thermal stress effects to advantage has been presented by Bodnar et al 11 , in which the well injection rate is initially set to that which would be expected if the well had zero skin and injection was at the fracture pressure. Given that the well is likely to have a small positive skin, this usually results in fracturing the well, probably in one location, but only enough to overcome the skin, and fracture growth is confined to the cooled zone, which is small initially.…”

Section: Modelling Multiple Fractures In a Real Injection Wellmentioning

confidence: 99%

See 1 more Smart Citation

Predicting Multiple Thermal Fractures in Horizontal Injection Wells; Coupling of a Wellbore and a Reservoir Simulator

2000

View full text Add to dashboard Cite

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractInjection well performance over the long term is often critically dependent upon how the well has been operated during its commissioning period. Whether the well is ultimately to be a seawater (or fresh water) injector or to be used for produced water re-injection, it may be beneficial to commission the well with a different water, probably at a different temperature, since this can have a marked effect upon the initiation of thermal fractures (more precisely these are usually in fact hydraulic fractures that have been initiated at reduced fracture gradients due to near wellbore reservoir cooling).In long horizontal injectors it is likely that several separate thermal fractures may be generated, and their creation needs to be controlled and managed to ensure optimum well performance. To generate a procedure for the well commissioning requires us to be able to predict bottom hole injection temperature, rate and pressure variation along the horizontal (or highly deviated) section and couple this into a reservoir fracture model. Achieving this using separate models soon becomes impractical, requiring too may iterations between coupled problems. This paper presents an overview of how an existing commercially available transient wellbore model has been coupled to a special purpose reservoir simulator, and how this has been applied to the modelling of multiple thermal fractures in horizontal injection wells. The paper also reports how the wellbore simulator has been modified to allow the prediction of depth dependent bottom hole temperatures. The paper will also comment on the application of this new coupled model to intervention work in production wells.

show abstract

Section: Modelling Multiple Fractures In a Real Injection Wellmentioning

confidence: 99%

“…The Bodnar et al 11 method also offers great opportunity for initiating pilot fractures and ensuring each interval takes flow in multiple hydraulic fracturing operations, and can even be used to optimise tip screen out designs.…”

Section: Modelling Multiple Fractures In a Real Injection Wellmentioning

confidence: 99%

Predicting Multiple Thermal Fractures in Horizontal Injection Wells; Coupling of a Wellbore and a Reservoir Simulator

2000

View full text Add to dashboard Cite

show abstract

“…Also, water injection into horizontal wells located in low permeability sands allow to increase injectivity up to 50 % compared to vertical injectors, improving reservoir conformance (Refs. 4,21,22).…”

Section: Pilot Test Projectsmentioning

confidence: 99%

Management of Water Alternating Gas (WAG) Injection Projects

Sánchez¹

1999

Proceedings of Latin American and Caribbean Petroleum Engineering Conference

View full text Add to dashboard Cite

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper summarizes the results of several successful WAG projects presented in many Improved Oil Recovery (IOR) Symposiums, indicating the main technical and operational issues considered in the development and implementation of such projects, and the management strategy for monitoring the process (Refs. 1,2,3,4). The results from these field applications will serve as useful guides and examples for improving reserves from many of our mature fields, and would lead to rethinking our strategy of reservoir development and new technology application for significant reserves enhancement in Venezuela. The paper focus on the selection of the technical aspects that must be consider in the implementation and management of the Water Alternating Gas (WAG) Injection process, providing an useable reference for the front line geoscientists, reservoir engineers, production operation engineers and technical managers who wish to obtain a technical and operational overview of the process as applied in the petroleum industry.Managing WAG injection projects requires making decisions regarding to the WAG ratio, half-cycle-slug size, and ultimate solvent slug size for each WAG injector in the field. The impact of these decisions affects the capital cost of solvent purchase, water and gas plant loads, fluid handling and lifting operation costs, and ultimate incremental oil recovery. Simulation models provide a tool for examining strategies for these decisions. However, it must be able to address operational impacts such as lift method and problems, injecting plugging, workovers and facilities operations. Project monitoring incorporating actual performance data into the reservoir models provides an excellent diagnostic tool for decision making. The technical considerations for managing WAG projects presented in this paper can be used as a methodology for monitoring projects performance at pattern and full field level, increasing understanding of the process performance, and improving decision making.

show abstract

“…Multibranch horizontal well refers to one horizontal well as the main borehole, and two or more branch boreholes into oil and gas reservoir are drilled in each part of the horizontal well, which can give play to the advantages of high efficiency and high production of horizontal wells, increase the drainage area, tap the remaining oil potential, increase the recovery rate, and improve the field development effect and is widely used in low-permeability reservoirs, thick oil reservoirs, thin reservoirs, and multilayer reservoirs [1][2][3][4][5][6][7][8]. Multibranch horizontal wells have become an important way to develop low-permeability oil and gas reservoirs, and it is of great significance to study the capacity of multibranch horizontal wells and its influencing factors in depth [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Production Behavior Analysis of Multibranched Horizontal Oil Well considering Reservoir and Well-Type Factors

Tang¹,

Sun²,

Zheng³

et al. 2022

Geofluids

View full text Add to dashboard Cite

Multibranched horizontal well is an important means to develop low permeability reservoirs. Fishbone multibranched horizontal well has the advantages of increasing drainage area, reducing drilling number, utilizing existing wells, and saving oilfield development cost, especially for marginal oilfield exploitation. The morphological structure of fishbone multibranched horizontal well is very complex, so the numerical simulation study is of great significance to guide the production of fishbone multibranched horizontal well. In this paper, the numerical model is established for fishbone multibranched horizontal well in the oil reservoir. The finite element method is used to numerically solve the mathematic model. The oil well production can be achieved by using the material balance method. Sensitivity analysis is made on the important reservoir and well-type factors that affect the production behavior and transient pressure distribution of fishbone multibranched horizontal well. It is concluded that the effective reservoir thickness and flowing bottomhole pressure have great influence on the productivity, but the influence of heterogeneity is not obvious. The length of main wellbore has great effect on the productivity in the early stage. Fishbone multibranched horizontal wells should be placed in the middle of the reservoir to increase productivity. Branch length, branch angle, branch number, and branch spacing are important parameters affecting the productivity of fishbone multibranched horizontal well. The variation of these parameters has obvious influence on the stimulation effect in the early stage of production, but the influence degree is different. Under the premise of drilling technology and drilling safety, the comprehensive impact of these four factors on productivity should be considered simultaneously. The presented model and obtained results not only enrich production behavior analysis of fishbone multibranched horizontal well but also have significance on formulation of stimulation measures and efficient low permeability reservoir development.

show abstract

First Horizontal Water Injectors in Prudhoe Bay Field, Alaska

Cited by 10 publications

References 7 publications

Predicting Multiple Thermal Fractures in Horizontal Injection Wells; Coupling of a Wellbore and a Reservoir Simulator

Predicting Multiple Thermal Fractures in Horizontal Injection Wells; Coupling of a Wellbore and a Reservoir Simulator

Management of Water Alternating Gas (WAG) Injection Projects

Production Behavior Analysis of Multibranched Horizontal Oil Well considering Reservoir and Well-Type Factors

Contact Info

Product

Resources

About