scholarly journals Dual gradient drilling: a pilot test of decanter centrifuge for CAPM technology

2021 ◽  
pp. 70-79
Author(s):  
R. I. Ganiev ◽  
◽  
Luc Deboer ◽  
A. H. Agliullin ◽  
R. A. Ismakov ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Offshore Drilling ◽  
Oil And Gas Exploration ◽  
Deepwater Drilling ◽  
Well Design ◽  
Managed Pressure Drilling ◽  
Drilling Technology ◽  
Different Depths ◽  
Dual Gradient ◽  
Decanter Centrifuge

The article is about problem of drilling deepwater oil and gas wells that consists in complicating and increasing cost of their well design due to narrowing mud window at different depths. The authors analyse drilling technology developed and applied in practice of offshore drilling with a dual gradient drilling, which allows drilling significant intervals without overlapping an intermediate casing string. Based on analysis of these technologies and taking into account their disadvantages the authors proposed and tested a new drilling technology of dual gradient drilling with placement of all necessary innovative equipment on drilling platform. Keywords: managed pressure drilling; deepwater drilling; offshore drilling; dual gradient drilling; riser; oil and gas exploration in sea.

scholarly journals Experimental Investigation of Force Response, Efficiency, and Wear Behaviors of Polycrystalline Diamond Rock Cutters

2019 ◽  
Vol 9 (15) ◽  
pp. 3059 ◽  
Author(s):  
Huaping Xiao ◽  
Shuhai Liu ◽  
Kaiwen Tan
Keyword(s):  
Cutting Force ◽  
Oil And Gas ◽  
Drilling Fluid ◽  
Polycrystalline Diamond ◽  
Friction Angle ◽  
Rake Angle ◽  
Oil And Gas Exploration ◽  
Drilling Technology ◽  
Air Drilling ◽  
Dry Conditions

Polycrystalline diamond compact (PDC) cutters are the most extensively used tool for rock drilling in superdeep oil and gas exploration, in which the air drilling technology without drilling fluid is highly promoted. This study examined the performance of PDC cutters in air drilling, including their friction angle, cutting force, specific energy, and wear behaviors, using a home-made testing apparatus and a commercial tribometer. It also investigated the dependence of cutting force on cutting depth and back rake angle. Results obtained in both dry conditions and in drilling fluid media were compared, and a tentative explanation to the observed differences was brought about by these two environments.

Research on the safe distance between passing ship and offshore drilling platform based on theory and statistics

2020 ◽  
Vol 234 (3) ◽  
pp. 642-650
Author(s):  
Haibo Xie ◽  
Zhengjiang Liu ◽  
Xingkang Xu ◽  
Jiping Zhang
Keyword(s):  
Oil And Gas ◽  
Statistical Correlation ◽  
Automatic Identification ◽  
Identification System ◽  
Safe Distance ◽  
Offshore Drilling ◽  
Oil And Gas Exploration ◽  
Safe Navigation ◽  
Drift Model ◽  
Calculation Results

The offshore drilling platform is the main equipment for oil and gas exploration. The increase in offshore drilling platform results in the apparently increased contradiction between oilfield exploitation and safe navigation of ships. In order to ensure safe navigation and the normal exploitation of oil and gas fields in a limited space, it is necessary to quantify the distance between ships and coastal drilling platforms. In this investigation, the relevant theoretical calculation models were developed, including a drift model for ship out of control and a ship emergency stopping model. By selecting appropriate ship samples, theoretical safe distances under different models can be obtained. With the use of statistical correlation theory based on the Automatic Identification System data of ship, the safe distance between passing ship and platform was further studied. Finally, the recommended safe distance in different waters was summarized by comparing different model calculation results and data statistics results. Research results are beneficial for the safety of ship navigation, safe operation of the platform, and the revision of relevant standards.

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 Oil and gas well drilling technology based on the system approaches and the results of application

2021 ◽  
Vol 1064 (1) ◽  
pp. 012059
Author(s):  
R R Gazizov ◽  
A P Chizhov ◽  
V E Andreev ◽  
A V Chibisov ◽  
V V Mukhametshin ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Gas Well ◽  
Well Drilling ◽  
Drilling Technology ◽  
System Approaches
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