... ABSTRACT: Wellbore cooldown via injecting and circulating cold fluid is a practical method to lower temperatures in the borehole and prevent damage to equipment associated with high temperature geothermal reservoirs in Enhanced Geothermal Systems. Extensive cooling often induces significant...

... ABSTRACT: Lost circulation events occur frequently during the drilling process. Due to their sudden and difficult to predict nature, they are often difficult to control in the field, resulting in low success rates and increased costs. Therefore, accurate formulation of lost circulation...

... compressional tectonics province granite eruption rhyolite fujian guangdong province china reservoir wang thickness geothermal gradient hainan province thermal reservoir circulation basin ARMA 24 0038 Formation Model of Granite Geothermal System in the Fujian, Guangdong and Hainan Provinces...

... ABSTRACT: Enhanced Geothermal Systems (EGS) offer significant potential for clean energy extraction from hot rock formations. However, maintaining high flow circulation, maximizing heat extraction, and minimizing thermal losses remain major challenges. This study presents a modeling...

... validation specimen geology reservoir geomechanics artificial neural network cement slurry architecture circulation operation ann concentration exhibition ARMA 24 1109 Artificial Neural Network for the Prediction of Unconfined Compressive Strength of Ultra Lightweight Cement for Oil and Gas...

... ABSTRACT Severe lost circulation in fractured formations is one of the most common and challenging problems in oil and gas drilling engineering. The lack of theoretical guidance on the selection of lost circulation materials (LCMs) for millimeter-level fractures results in unstable fracture...

... ABSTRACT One of the most serious issues that arises during drilling operations is lost circulation. Significant study into wellbore strengthening has been conducted over several years in the attempt to improve the fracture gradient and reduce losses. Three ways to wellbore strengthening have...

... ABSTRACT To further reduce the risk of lost circulation and improve the accuracy and real-time lost circulation warning, this paper proposes a lost circulation warning model based on hybrid attention long short-term memory (HALSTM) network. Firstly, combined with the mechanism of lost...

... ABSTRACT: This paper strives to model and validate annulus fluid and casing temperature profiles during wellbore warmback after fluid circulations. Modeling is based on published analytical methods. A research test well has been drilled to a predefined temperature target which can help...

... ABSTRACT: Bohai A Oilfield is a fractured oil and gas field, and the lost circulation problems in the non-reservoir and the reservoir are severe during the drilling process. The vicious lost circulation problem in the A Oilfield is characterized by the suddenness of the lost circulation event...

... activities. During a drilling campaign in semi-consolidated deepwater clastics, a generic link between faults, fluid loss events, fluid circulation pressure and the fault strength parameters was established. In order to reduce the risks of fault-induced fluid loss along any proposed well path in future...

... ABSTRACT: Lost circulation is a technical problem in drilling engineering, resulting in increased drilling cost and extended drilling cycle. Reservoir rocks in Block A of Shale Gas have the characteristics of low porosity and low permeability, strong heterogeneity and fault fracture...

... characterization circulation carbonate reservoir us rock mechanic geomechanics symposium characteristic reliability huang china university wang accuracy petroleum-beijing chen ARMA 22 485 Prediction of mud loss type based on seismic data using machine learning Huiwen Pang1,2* 1. State Key Laboratory...

... ABSTRACT: Wellbore instability is one of the difficult problems restricting safe drilling. The traditional theoretical model of wellbore stability is easy to cause the actual drilling fluid density to be high and aggravate the risk of drilling lost circulation. Therefore, firstly, the rock...

... ABSTRACT: Drilling mud loss is of crucial importance in drilling. Lost circulation will extend the well construction period, cause investment losses, and even cause serious downhole accidents. In the Mizhi block of Changqing Oilfield targeted by this research, serious leakage occurred in many...

... the ability or inability to lower it downhole, rotate it, or circulate. In other words, as long as the drill string cannot be pulled out of the hole with the maximum allowable tensile strength of the drill string, it is considered stuck (Alshaikh et al., 2018). us government wellbore design wellbore...

... ABSTRACT: Heat exchange and energy extraction from a low-permeability reservoir are important processes for EGS design. Cold water is circulated from a wellbore and carries warmer water up to the surface. Depending on the circulation velocity and temperature out to the surface, different...

... ABSTRACT: Lost circulation is a unique challenge unlike other factors contributing to non-productive time (NPT). Due to the variability in the nature and type of lost circulation prone formations; there is no universal solution to this challenge. This publication presents a novel approach...

... ABSTRACT: Geothermal energy production by water circulation in natural and/or man-made fracture systems is referred to as enhanced or engineered geothermal systems (EGS). Good understanding of the induced fracture properties is essential for estimating /evaluating the performance...

... ABSTRACT: Geothermal energy from naturally or hydraulically fractured reservoirs is extracted by cold water injection and circulation using injection and production wells. Well spacing, well pattern, and injection-extraction rate schedule are among the most important factors that control...