Fracture Gradient Prediction And Its Application In Oilfield Operations Pdf

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fracture gradient prediction and its application in oilfield operations pdf

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This invention is in the field of hydrocarbon well planning, and is more particularly directed to the determination of pore pressure and fracture gradient profiles at locations where hydrocarbon wells may be drilled. In the field of oil and gas production, the design of new wells has become a critical factor in minimizing drilling cost and in ensuring successful production. Proper well planning includes such factors as the weight of the drilling mud to be used during the drilling operation, and the necessity for and design of casing strings.

Fracture gradient prediction: an overview and an improved method

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Liang Published Engineering. The present deterministic pore pressure and fracture gradient prediction techniques simplify the input variables from a statistical range of data to a deterministic value, thereby producing over-simplified deterministic pore pressure and fracture gradient results. As a consequence, we lose the ability to quantitativel y analyze risks, and we cannot quantify the uncertainties of our pore pressure and fracture gradient prediction. View via Publisher.

Eaton, Ben A.. In arriving at a new method of predicting formation fracture gradients, it was found that overburden load, Poisson's ratio for rocks, and pressure gradients vary with depth. Although the method was developed specifically for the Gulf Coast, it should be highly reliable for all areas, provided that the variables reflect the conditions in the specific area being considered. The subject of many discussions and technical papers in the last 20 years has been the prediction of the wellbore pressure gradients that are required to induce or extend fractures in subsurface formations. The subject merits this attention because of the frequently recurring problems that arise from an inability to predict fracture pressure gradients. Encountered in several common types of operations in the oil industry are problems associated with the prediction of formation fracture pressure gradients. When wells are being drilled in both new and old fields, lost circulation is often a very troublesome and expensive problem.

Application of Quantitative Risk Analysis to Pore Pressure and Fracture Gradient Prediction

Ahmed, A. December 8, Energy Resour. March ; 3 : Several correlations are available to determine the fracture pressure, a vital property of a well, which is essential in the design of the drilling operations and preventing problems. Some of these correlations are based on the rock and formation characteristics, and others are based on log data.

The fracture gradient is a critical parameter for drilling mud weight design in the energy industry. A new method in fracture gradient prediction is proposed based on analyzing worldwide leak-off test LOT data in offshore drilling. Current fracture gradient prediction methods are also reviewed and compared to the proposed method. We analyze more than LOT data in several offshore petroleum basins and find that the fracture gradient depends not only on the overburden stress and pore pressure, but also on the depth. The data indicate that the effective stress coefficient is higher at a shallower depth than that at a deeper depth in the shale formations.


Fracture Gradient Prediction and Its Application in Oilfield Operations In arriving at a new method of predicting formation fracture gradients, it was found that overburden load, Poisson's ratio for rocks, This content is only available via PDF.


Application of Quantitative Risk Analysis to Pore Pressure and Fracture Gradient Prediction

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Application of artificial neural network in fracture pressure prediction

Fracture Gradient Prediction and Its Application in Oilfield Operations

Prediction of formation fracture pressure is an essential task in designing safer drilling operations and economical well planning, allowing effective control, operation and stimulation. Errors in fracture pressure prediction can lead to several serious problems such as lost circulation and kick, and even blowout. This paper presents an overview on application of artificial intelligent in the petroleum industry. The results obtained from the model are compared with those obtained from conventional method.

Eaton, Ben A. Continental Oil Co. October, — OnePetro. In arriving at a new method of predicting formation fracture gradients, it was found that overburden load, Poisson's ratio for rocks, and pressure gradients vary with depth.

Introduction

 - Немедленно. Фонтейн поднял голову и произнес с ледяным спокойствием: - Вот мое решение. Мы не отключаемся. Мы будем ждать. Джабба открыл рот. - Но, директор, ведь это… - Риск, - прервал его Фонтейн.

Но общественные организации типа Фонда электронных границ считали. И развязали против Стратмора непримиримую войну. ГЛАВА 24 Дэвид Беккер стоял в телефонной будке на противоположной стороне улицы, прямо напротив городской больницы, откуда его только что выставили за причинение беспокойства пациенту под номером 104, месье Клушару. Все внезапно осложнилось, пошло совсем не так, как он рассчитывал. Мелкая любезность, которую он оказал Стратмору, забрав личные вещи Танкадо, вылилась в поиски таинственного кольца, как в известной игре, где нужно находить спрятанные предметы. Дэвид только что позвонил Стратмору и рассказал о немецком туристе.

Она следила за смертью Танкадо - в который уже .

Я не хотел, чтобы ты узнала об этом. Я был уверен, что он тебе все рассказал. Сьюзан ощутила угрызения совести.

У него был такой вид, словно он только что увидел привидение. - Какого черта здесь нужно Чатрукьяну? - недовольно поинтересовался Стратмор.  - Сегодня не его дежурство. - Похоже, что-то стряслось, - сказала Сьюзан.

Одно различие от природы, другое - рукотворное.

1 Comments

  1. Kiera T. 07.05.2021 at 17:07

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