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On the potential of alyssum as an herbal fiber to improve the filtration and rheological characteristics of water-based drilling muds

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Petroleum 2022年第4期8卷 509-515页

作者： Mohammad Amin Ebrahimi Ali Sanati Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Petroleum and Petrochemical Engineering School Hakim Sabzevari UniversitySabzevarIran

drilling muds play an important role in drilling and production operations so that the degree of success in such operations is determined by the proper design of these *** optimize drilling operations and avoid excessive expenditure,it is essential to prepare a drilling mud that is both cheap and *** additives are typically used in drilling systems to improve these fluids'capabilities in terms of hole cleaning capacity,filtration control,viscosity,yield point,heat transfer,***,environmental concerns,cost of production,and availability are always considered challenging *** study introduces an eco-friendly herbal fiber in powder and regular forms as a potential alternative to other chemical *** do so,alyssum homolocarpum seed mucilage was added with different concentrations to the water-based drilling muds,and its rheological behavior,filtration control,and the induced formation damage were examined and the optimum concentration was *** results of this study revealed the advantages of the drilling muds formulated with alyssum in terms of filtration control,rheology,formation damage,and greenness.

关键词： drilling fluid alyssum Herbal fiber Rheology Filtration contro

Effect of hydrophilic silica nanoparticles on hydrate formation during methane gas migration in a simulated wellbore

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Petroleum 2021年第4期7卷 485-495页

作者： Meng Xu Xiangyu Fang Fulong Ning Wenjia Ou Ling Zhang Dongdong Wang Faculty of Engineering China University of GeosciencesWuhanHubei430074China Anhui Nuclear Exploration Technology Central Institute Wuhu241000China National Center for International Research on Deep Earth drilling and Resource Development China University of GeosciencesWuhanHubei430074China

Natural gas hydrates are mostly formed in low-permeability and fractured muddy sedimentary forma*** suitable nanoparticles to the drilling fluid system can improve its filtrate resistance and fracture plugging,and effectively weaken the invasion of drilling fluid into the ***,it is likely that nanoparticles promote hydrate formation and accumulation in wellbores which will induce ***,this study investigated the effect of hydrophilic silica nanoparticles with particle sizes of 30 nm,60 nm,and 80 nm and concentrations of 0.5e4.0 wt%on hydrate formation during upward migration of methane gas using a dynamic simulation system for hydrate formation in a well*** experimental results show that under the condition of methane gas migration,hydrophilic silica nanoparticles inhibit hydrate *** inhibition effect increased with the growth in the particle size under a constant concentration,whereas it first increased and then decreased with increasing nanoparticle concentration under a constant particle *** strongest inhibition effect was observed at a hydrophilic silica nanoparticle concentration of 2.0 wt%.The influence of hydrophilic silica nanoparticles on hydrate formation may be mainly determined by their hydrophilic properties,heat and mass transfer,and gas migration in the *** research indicates that hydrophilic silica nanoparticles can be added to hydrate drilling fluid systems if their concentration can be properly controlled.

关键词： Natural gas hydrate drilling fluid Hydrophilic silica nanoparticles Methane gas migration

Machine vision for drill string slip status detection

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Petroleum Research 2022年第1期7卷 115-122页

作者： Sunil Kumar Khare Dept.of Petroleum Engineering and Earth Sciences University of Petroleum and Energy StudiesDehradunUK248007India

Slip status of drill string is system generated binary value computed by comparison of sensor generated real time hook load value with a minimum threshold value of hook load stored in measurement *** research article describes a novel method of slip status detection by machine vision technology which helps overcome the constraints of slip status detection with legacy measurement *** also helps improve the real time drilling data quality and optimize and automate drilling operations.A method to detect drill string slip status with high-resolution digital camera installed on mast near rig floor is described along with backend vision processing and communication modules,which generate binary values of slip *** binary values are transferred in real time to drilling measurement system of rig to compute other drilling parameters like bit depth,hole depth and stand *** method includes deploying active optical sensors at the rig floor,obtaining 1-D,2-D,or 3D image data,and processing it to obtain the status of drill *** measurement of slip status by machine vision helps reduce non-productive time(NPT)by reliable real time surveillance of drilling operations.

关键词： Oil and gas Machine vision Camera Slip-status Rig drilling Rotary table NPT drilling fluid Drill pipe

Tannin-Based Deflocculants in High Temperature High Pressure Wells: A Comprehensive Review

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Advances in Chemical Engineering and Science 2021年第4期11卷 263-289页

作者： Michael Kwadwo Fokuo Wilberforce Nkrumah Aggrey Mizpah Ama Dziedzorm Rockson Yen Adams Sokama-Neuyam Patrick Boakye Gershon Amenuvor Kwame Sarkodie Emmanuel Pinto Hassan Karimaie Department of Petroleum Engineering Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Chemical Engineering Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Chemistry Kwame Nkrumah University of Science and Technology Kumasi Ghana

Clay deflocculants that are commonly used in water-based muds under high temperature high pressure (HTHP) oilwell drilling conditions have been found to contain chromium which is toxic. Tannin-based deflocculants are regarded as a more environmentally friendly and suitable alternative to the chrome-based deflocculants. However, tannin-based deflocculants have not been studied extensively and understood completely, and for the past two years, there have not been many active pieces of research in the area. To advance research in the area, there is a need to critically and holistically review research works that have been done so far on tannin-based deflocculants as drilling mud additives to identify research challenges and opportunities. This review paper provides an overview of tannin-based deflocculants used in water-based muds under HTHP drilling conditions, including the various forms, thermal stability, deflocculating ability and environmental acceptance of the deflocculant. The review revealed that under HTHP conditions, modified and unmodified tannin-based deflocculants both deflocculate water muds well and are thermostable. However, only a few studies have been conducted on their usage as deflocculants at temperatures of 150ºC or above. The research gaps identified if pursued could advance the use of tannin-based deflocculants as green substitutes for the conventional chrome-based deflocculants.

关键词： Deflocculant Tannin drilling fluid Bentonite Flocculation High Temperature

List of China Drilline fluid Products and Suppliers 1994's

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钻井液与完井液 1994年第6期 4-20+82页

作者： Quality Supervision and Inspection Center of drilling fluid of CNPC Quality Supervision and Inspection Center of Oilfield Chemicals of CNPC drilling fluid & Completion fluid 中国石油天然气总公司钻井液质量监督检测站中国石油天然气总公司油田化学剂昆山质量监督检测站钻井液与完井液编辑部

我国的钻井液处理剂近十年来不论在品种上、质量上都取得了飞速发展。在各方面的大力支持下,我们编写了这张“汇总表”,目的是有利于了解全貌,有利于对外交流。我们希望每年能刊出一次,所以希望大家能支持它,补充它,由于是首次汇总,肯... 详细信息

我国的钻井液处理剂近十年来不论在品种上、质量上都取得了飞速发展。在各方面的大力支持下,我们编写了这张“汇总表”,目的是有利于了解全貌,有利于对外交流。我们希望每年能刊出一次,所以希望大家能支持它,补充它,由于是首次汇总,肯定很不全面并可能存在很多错误疏漏之处,恳请提出修改的意见(例如产品的分类、归类方法等)。补充修改的意见请寄上述三单位。

关键词： Mud Additive drilling fluid Well Completion fluid

Experimental study on ultrasonic propagation in water-based bentonite slurry

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Global Geology 2009年第3期12卷 174-178页

作者： LAN Kai YAN Taining drilling Engineering Technology Institute Zhongyuan Petroleum Exploration Bureau Puyang 457001 Henan China Engineering Faculty China University of Geosciences Wuhan 430074 China

drilling fluid is a common flushing medium used in pile foundation, geological drilling and petroleum drilling. Study on ultrasonic propagation properties in drilling fluid is of vital importance, not only for developing equipments to non-contact measuring concrete casting level for bored pile, but also for developing equip- ments considering drilling fluid as signal channel. The existence of clay particles makes the ultrasonic propagation and attenuation in drilling fluid much different from pure water. In order to know the relation among ultrasound frequency, slun-y density and depth, a series of laboratory experiments about ultrasound propagation in water-based bentonite slurry were finished. Wavelet method was adopted to process the gained original waves of ultrasonic propagation in slurry, so we knew the velocity and attenuation coefficient of ultrasound propagated in different drilling fluids with different density. The first group experiments shows that with density of drilling fluid increase, ultrasonic velocity will decrease but attenuation coefficient will increase if ultrasonic frequency keep constant. The second group experiments shows that the power of ultrasound will intensify in small bore hole, the attenuation coefficient is much smaller than theoretical value.

关键词： ultrasound drilling fluid propagation properties ultrasound velocity ultrasonic attenuation