As an increasing number of horizontal gas wells are drilled, the need for a quick and reliable method to estimate the pressure-rate behavior of these wells is important to optimize well performance and make operational decisions. A reliable empirical relationship will provide engineers a technique to assess the performance of horizontal gas wells prior to undertaking extensive and often time-consuming simulation studies to model the well behavior.This work presents an analysis of the pressure-rate performance of horizontal gas wells using a three-dimensional finite difference reservoir simulator for different reservoir and wellbore conditions. The primary objective of this work is to study the pressure-rate behavior of horizontal gas wells and develop an empirical inflow performance relationship to predict their behavior.The study investigates a range of reservoir conditions to assess their effect on horizontal gas well behavior. Parameters studied include reservoir permeability, permeability anisotropy, gas gravity, drainage area, pay thickness and horizontal wellbore length. The obtained data is used to develop empirical inflow performance relationships (IPRs) to predict the pressure-rate behavior of gas wells. The IPRs are presented in terms of pressure, pressure-squared, and pseudopressure. The resulting IPRs provide a tool by which the petroleum engineer can quickly estimate the performance of a horizontal gas well without undertaking a time-consuming simulation study.
As hydrocarbon prices continue to fluctuate, it is imperative for engineers to come-up with optimum and cost effective ways of managing and developing a field. This is especially true in heavy oil operations, where the margins are very small. So it is pertinent to gain a better and broader understanding on how completion techniques can be optimized to gain the maximum value for companies. This work presents an analysis/evaluation of gravel packs and slotted liners in a heavy oil field in California. The objective of this work is to compare gravel packs and slotted liners from a production and sand control standpoint. This work also has a secondary objective of re-evaluating the performance of old gravel pack wells that have been sidetracked using slotted liners. The result of this work indicates that there is not a "one size fits all" solution to the problem of sanding in the field. So, it is imperative that all feasible completion techniques be analyzed and their impact on production and economics be considered. The conclusions and recommendations from this study will provide an insight through which Petroleum Engineers in heavy oil operations will make educated decisions on how to optimally complete a field and also obtain the most value for the investment.
Managing a waterflood in a diatomite reservoir faces a number of challenges, such as oil recovery, performance matching, optimum well spacing and subsidence. Another issue is the paucity of studies done on the diatomite reservoir, as most studies in petroleum engineering are based on the performance of more conventional clastic /sandstone or carbonate reservoirs. So, applying some of these concepts in a diatomite reservoir can lead to erroneous results. A better understanding of the relationship between the geology and reservoir performance cannot be overemphasized, especially where the reservoir is a diatomite reservoir with no known analogue. Improving the recovery from diatomite reservoirs has been a problem since first production in the 1890's. In 2007, horizontal wells were drilled in the Lost Hills field and supported with vertical water injectors to improve recovery. These wells are fractured hydraulically to improve drainage and conductivity. However, the oil production performance results from these wells were below expectation. Some of the wells watered out, others were fraught with ‘sanding’ and other operational issues. This study looks at effective ways of scaling kv/kh which is critical to matching production performance. A good numerical model that incorporates understanding of the geology proved important to be able to predict performance from wells. The geopseudo approach, a multiphase flow upscaling methodology, is used in this study. It incorporates flow/structure interaction at the lamina level. The conclusions and recommendations from this study will provide an insight through which petroleum engineers will be able to build a robust simulation model needed for predicting well performance and also help in making data driven decisions with respect to field development.
As an increasing number of horizontal gas wells are drilled, the need for a quick and reliable method to estimate the pressure-rate behavior of these wells is important to optimize well performance and make operational decisions. A reliable empirical relationship will provide engineers a technique to assess the performance of horizontal gas wells prior to undertaking extensive and often time-consuming simulation studies to model the well behavior.This work presents an analysis of the pressure-rate performance of horizontal gas wells using a three-dimensional finite difference reservoir simulator for different reservoir and wellbore conditions. The primary objective of this work is to study the pressure-rate behavior of horizontal gas wells and develop an empirical inflow performance relationship to predict their behavior.The study investigates a range of reservoir conditions to assess their effect on horizontal gas well behavior. Parameters studied include reservoir permeability, permeability anisotropy, gas gravity, drainage area, pay thickness and horizontal wellbore length. The obtained data is used to develop empirical inflow performance relationships (IPRs) to predict the pressure-rate behavior of gas wells. The IPRs are presented in terms of pressure, pressure-squared, and pseudopressure. The resulting IPRs provide a tool by which the petroleum engineer can quickly estimate the performance of a horizontal gas well without undertaking a time-consuming simulation study.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.