Here, we report the first study on hole making performance of thermoplastic carbon fibre/polyetherketoneketone (CF/PEKK) composite. Different methods (conventional drilling vs. helical milling) have been compared and effect different feed rates has investigated. The thermal-mechanical interaction resulting damage elucidated for time fibre reinforced thermoplastics (CFRTPs) making. In material s...

Drilling waste is a problem that affects the environment, society, and health. However, rheological additive in drilling fluid source of generation waste. Hence, suitable became concern bored pile construction. Conventional bentonite has been replaced by usage polymer operations, this due to operational, environmental, economic aspects. Unlike bentonite, polyacrylamide (PAM) high molecular weig...

SUMMARY Use and interpretation of wireline lookahead VSP combined with LWD seismic while drilling and LWD sonic log for base of salt prediction, a case study offshore Brasil deep offshore Campos. It aimed to assist drilling decisions by obtaining a more accurate prediction of Base of Salt depth. Setting the 9-5/8" casing point was key from a drilling perspective.

Abstract This paper establishes the risk assessment index system according to characteristics of oil and gas drilling engineering cooperation project. After modularizing risk indexes of oil and gas drilling engineering cooperation project into eight clusters, risks are evaluated on the basis of multi-level fuzzy comprehensive evaluation method. The study is to construct risk assessment indexes ...

The technology of bi-directional data transmission between the well bottom and ground play an increasingly important role in modern drilling technology while drilling. The technology of acoustic data transmission while drilling can achieve higher band rate compared with the traditional. The transducer is one of the most imp-ortant components of it. This article has simulated the piezoelectric c...

Since Dual Gradient Drilling (DGD) is a new and advanced drilling technology, currently its methods, procedures, simulations and experiments are still underdeveloped. It requires more study, research and advanced methods on DGD systems. The motivation of the paper is to study DGD systems, design good operational drilling parameters, and work on automated DGD systems to further realize safe and ...

There is abnormal fluid pressure widely distributed in Yinggehai-Qiongdongnan Basin, with zones extending from different depths, and the formation causes of here are complicated. It one three HTHP offshore regions world at present. Hence, drilling this region very difficult. discovered practices recent years that, due to multiple mechanisms region, conventional prediction model based on under-c...

Unconventional geothermal resource development can contribute to increase power generation from renewable energy sources in countries without conventional hydrothermal reservoirs, which are usually associated with magmatic activity and extensional faulting, as well expand the those regions where resources already used. Three recent drilling experiences focused on characterization of unconventio...