scholarly journals PARTICULARITIES RELATED TO DRILLING OFFSHORE WELLS IN AREAS WITH VERY DEEP WATER

Neft i gaz ◽  
2020 ◽  
Vol 3-4 (117-1118) ◽  
pp. 93-108
Author(s):  
Valentin-Paul TUDORACHE1 ◽  
◽  
Mihail MINESCU ◽  
Nicolae ILIAS ◽  
◽  
...  
Keyword(s):  
Deep Water ◽  
Oil And Gas ◽  
Oil Industry ◽  
Offshore Drilling ◽  
Starting Point ◽  
Oil And Gas Resources ◽  
Drilling Operations ◽  
High Production ◽  
E Mail ◽  
Theoretical Results

The article presents an analysis of the realities faced by the operators in the oil industry, but especially the operators in the exploitation of the risers. Oil industry operators are focusing on drilling offshore wells to very deep water depths, as there are significant oil and gas resources that ensure high production. This analysis refers to the establishment of limit conditions that occur during drilling operations. We call this complex of factors the mechanics of riser. The article also refers to establishing the way of working in accordance with the API recommendations in force and obtaining theoretical results for offshore drilling in deep water. *Автор для переписки. E-mail: [email protected] 94 НЕФТЬ И ГАЗ 2020. 3–4 (117–118) БУРЕНИЕ These results are the starting point for simulation with the help of specialized software and obtaining results useful for the exploitation of risers in drilling wells in deep water. Drilling activity in deep water can only be done with dynamically positioned platforms, such as semisubmersibles platforms and drillship.

Prediction Model for Morphological Distribution and Evolution of Submarine Cuttings Piles in Offshore Drilling

SPE Journal ◽  
2021 ◽  
pp. 1-16
Author(s):  
Zhi Zhang ◽  
Baojiang Sun ◽  
Zhiyuan Wang ◽  
Shikun Tong ◽  
Bing Guo ◽  
...  
Keyword(s):  
Flow Field ◽  
Transport Process ◽  
Oil And Gas ◽  
Ocean Current ◽  
Offshore Drilling ◽  
Oil And Gas Resources ◽  
Drilling Operations ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Morphological Distribution

Summary Offshore oil and gas has effectively alleviated the global shortage of oil and gas resources, and drilling operations are becoming increasingly frequent. However, the cuttings discharged during surface drilling are transported and deposited to form cuttings piles, which pose a serious threat to the marine ecological environment. In this study, we consider the randomness and uncertainty of cuttings movement to divide the transport process into parabola and collision motion between the moving particles and slope particles after falling on the slope surface of cuttings piles. Through specific analysis of the stress state of a single particle in the transport process and changes in momentum distribution of the particle swarm, the evolution model of the morphological distribution of cuttings piles and the nearby flow field is established. This model can quantitatively analyze the evolution law of the morphological distribution of cuttings piles under the action of ocean current and the disturbance law of the flow field near the cuttings piles caused by the invasion of cuttings particles. Comparing the measured data at an offshore drilling field and prediction results of the model of Sun et al. (2020), the relative error of the model amounts to less than 15%, which demonstrates its rationality. The simulation results show that the morphological distribution of cuttings piles and the nearby flow field change significantly under the action of ocean current, and the intensity of evolution is related to the current velocity and cuttings size, which is of great significance for the quantitative analysis of the evolution of cuttings piles under the action of ocean currents and accurate prediction of their morphological distribution.

Drilling and Service Contracts in Offshore Oil and Gas Operations

1973 ◽  
Vol 11 (3) ◽  
pp. 480
Author(s):  
J. M. Killey
Keyword(s):  
Oil And Gas ◽  
Oil Industry ◽  
Offshore Drilling ◽  
Oil Companies ◽  
Drilling Rig ◽  
Service Contracts ◽  
Oil And Gas Operations ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Offshore Operations

As onshore oil and gas deposits are becoming more difficult to locate, and as the world demands for energy continue to increase at an alarming rate, oil companies are channeling much of their exploration activities towards offshore operations, and in particular, towards operations centered off Canada's coast lines. Because of the environment, offshore drilling presents problems which are novel to the onshore-geared oil industry. J. M. Killey discusses in detail many of the considerations involved in drafting the offshore drilling contract, concentrating on problems such as the liability of the various parties; costs; scheduling; pollution; conflict of laws; etc. Similarly, he discusses service contracts (such as supply boat charters; towing services; helicopter services; etc.^ which are necessity to the operation of an offshore drilling rig. To complement his paper, the author has included number of appendices which list the various considerations lawyer must keep in mind when drafting contracts for offshore operations.

scholarly journals A New Pricing Model for Crude Oil Pre-Sale Units via SPFO (Standard Parallel Forward with Options) in Iran

2018 ◽  
Vol 7 (1) ◽  
pp. 32
Author(s):  
Ghasem Nikjou ◽  
Hamed Najafi ◽  
Kamran Salmani
Keyword(s):  
Oil And Gas ◽  
Development Program ◽  
Oil Industry ◽  
Pricing Model ◽  
Forward Security ◽  
Option Pricing Model ◽  
Oil And Gas Resources ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Legal Barriers

Nowadays energy has an important role as a driving sector of economy. Forecasting 150 billion dollars investment in energy sector during the fifth development program in Iran, the banking and financial system require a dynamic and modern economy and financial instruments. Obviously, this approach needs to remove legal barriers and modification of contracts. Financing in the oil industry has faced with serious challenges in recent years. In addition, investing in common offshore oil and gas resources is indispensable. Accordingly we are going to design a new contract which is called Oil SPFO (Standard Parallel Forward security with two Options under betting condition), in order to raise funds needed. In this article we would investigate the SPFO for Iran Ministry of Petroleum (MOP)’s finance and present a model for pricing the oil SPFO based on Black and Scholes option pricing model. Finally, we have some recommendations to develop the oil SPFO and suggest that other researchers work on pricing the oil parallel forward securities according to this model.

scholarly journals Elements constituent for the design of a riser system in areas deep water and extreme deep water applied for offshore drilling

2020 ◽  
Vol 6 (3) ◽  
pp. 127-144
Author(s):  
Marius STAN ◽  
◽  
Valentin Paul TUDORACHE ◽  
Lazăr AVRAM ◽  
Mohamed Iyad AL NABOULSI ◽  
...  
Keyword(s):  
Working Conditions ◽  
Water Depth ◽  
Deep Water ◽  
Environmental Conditions ◽  
Oil And Gas ◽  
Operational Mode ◽  
Exploration And Exploitation ◽  
Offshore Drilling ◽  
The Stability ◽  
Marine Platform

Riser systems are integral components of the offshore developments used to recover oil and gas stored in the reservoirs below the earth’s oceans and seas. These riser systems are used in all facets of the development offshore process including exploration and exploitation wells completion/intervention, and production of the hydrocarbons. Their primary function is to facilitate the safe transportation of material, oil and gases between the seafloor oceans and seas and the marine platform. As the water depth increases, the working conditions of this system becomes challenging due to the complex forces and extreme environmental conditions which are impacting the operational mode as well as the stability. In this paper several aspects concerning riser mechanics and the behaviour of the riser column will be evaluated against different operational situations.

scholarly journals Submersible Screw Pumps In Oil Industry

2020 ◽  
Author(s):  
Sudad H Al-Obaidi
Keyword(s):  
Oil And Gas ◽  
Oil Industry ◽  
Oil Products ◽  
Oil Well ◽  
Submersible Pump ◽  
Well Production ◽  
Sucker Rod ◽  
Oil And Gas Resources ◽  
Earth’S Interior ◽  
Earth's Interior

The process of extracting oil and gas resources, processing them and delivering them to the final target represents a vital process in oil industry. It depends on many factors among which a set of pumps and associated equipment. In this study, an analysis of oil well production extracted from the earth's interior to the surface is performed. Oil pumps used for lifting oil products from wells are investigated. The advantages of an oil two-rotor submersible pump over centrifugal and sucker rod pumps are noted.

Finite Element Analysis of the Strength of Ladder Type Structure of the Deep-Water AUV

2013 ◽  
Vol 690-693 ◽  
pp. 1903-1908
Author(s):  
Dong Jie Wei ◽  
Lian Hong Zhang ◽  
Hong Wei Zhang ◽  
Fei Liu
Keyword(s):  
Deep Water ◽  
Oil And Gas ◽  
Autonomous Underwater Vehicle ◽  
Lightweight Design ◽  
Effective Capacity ◽  
Material Strength ◽  
Element Analysis ◽  
Allowable Range ◽  
Oil And Gas Resources ◽  
Main Frame

Autonomous underwater vehicle (AUV) is one of the current research hotspots in the field of robotics. It has abroad application prospect in the oceanographic survey, resource exploration and military fields. The AUV presented in this paper is mainly used for investigating the deep water oil and gas resources and works in underwater 3000 meters. It carries a series of measuring equipment, such as battery, sensors and pressure-resistant cabins, to engage in exploration tasks. When the AUV is lifted in water or in air, the loads acted on the main frame of AUV are different. In order to realize lightweight design and save buoyancy within the allowable range of the material strength, this paper puts forward a novel ladder type construction with two longitudinal beams and five crossbeams made of stainless steel, and analyzes the forces sustained by the main frame when lifted. Compared with traditional aluminum welding structure frames, the advantages of the trapezoid frame of the deep water AUV are as follows: large effective capacity, strong bearing capability and convenient maintenance. At the same time, using GRP hulls can improve the total structural strength significantly. The validity of the design and analyze is verified by recent at-sea trails.

Arctic Offshore Engineering—An Overview

1983 ◽  
Vol 20 (04) ◽  
pp. 323-331
Author(s):  
Peter G. Noble
Keyword(s):  
Oil And Gas ◽  
State Of The Art ◽  
Canadian Arctic ◽  
Marine Riser ◽  
Offshore Drilling ◽  
Engineering Technology ◽  
Offshore Engineering ◽  
New Concepts ◽  
Drilling Operations ◽  
Ice Forces

The paper examines the state of the art of offshore drilling operations in the ice-infested Beaufort Sea region of the Canadian Arctic. As exploration and drilling proceed farther and farther from the shoreline into deeper and more hostile waters, new concepts are evolving in Arctic engineering technology to permit the economical recovery of vast resources of oil and gas over an extended season. Several of these innovations, including a deep-hulled drillship designed to protect the marine riser and reduce ice forces, artificial islands of the caisson type, and the use of massive icebreaking dredges, are described and illustrated.

scholarly journals Submersible Screw Pumps In Oil Industry

2020 ◽  
Author(s):  
Sudad H Al-Obaidi
Keyword(s):  
Oil And Gas ◽  
Oil Industry ◽  
Oil Products ◽  
Oil Well ◽  
Submersible Pump ◽  
Well Production ◽  
Sucker Rod ◽  
Oil And Gas Resources ◽  
Earth’S Interior ◽  
Earth's Interior

The process of extracting oil and gas resources, processing them and delivering them to the final target represents a vital process in oil industry. It depends on many factors among which a set of pumps and associated equipment. In this study, an analysis of oil well production extracted from the earth's interior to the surface is performed. Oil pumps used for lifting oil products from wells are investigated. The advantages of an oil two-rotor submersible pump over centrifugal and sucker rod pumps are noted.

scholarly journals Fracturing Rocks to Unlock New Oil

2013 ◽  
Vol 135 (12) ◽  
pp. 24-29
Author(s):  
Mark Crawford
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Numerical Models ◽  
Oil Industry ◽  
New Materials ◽  
Real Time Measurement ◽  
Minimum Number ◽  
Oil And Gas Resources ◽  
Horizontal Wellbore ◽  
The Right

This article discusses various uses and benefits of hydraulic fracturing technology in the field of oil industry. Engineers continue to increase hydraulic fracturing efficiency by developing better multistage stimulation systems. These systems enable treatment of many intervals along a horizontal wellbore with a minimum number of pull-outs, or even in a single continuous operation. Many key advances in drilling and hydrofracturing have resulted from sophisticated modeling programs. Mechanical engineers play key roles in many aspects of hydrofracturing, especially the design of better down-hole tools, new materials, and improved numerical models. With the advances in modeling and real-time measurement, operators can deliver just the right type of fracking pressure, exactly where they want it, and repeat the process as needed, either in the same well, one that parallels it, or one that radiates out from the same central drill pad. The experts feel that if the world wishes to fully use its oil-and-gas resources, it will go hand-in-hand with hydraulic fracturing.

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