drilling fluids are separated into three major classifications figure1
Drilling fluid Dung dịch khoan
... Drilling Fluids Manual Section Introduction Drilling Fluid Classifications a Drilling fluids are separated into three major classifications (Figure 1): • • • Pneumatic Oil-Based Water-Based Figure Drilling ... Company Drilling Fluids Manual Drilling Fluid Classifications 1-1 Pneumatic Fluids 1-1 Oil-Based Fluids 1-2 Water-Based Fluids 1-3 Non-Inhibitive Fluids ... Corporation.” Amoco Production Company Drilling Fluids Manual Water-Based Fluids Water based fluids are the most extensively used drilling fluids They are generally easy to build, inexpensive...
Ngày tải lên: 17/07/2016, 11:01
Drilling Fluids Processing Handbook P1
... Comments 11 1.6 Waste Management 13 Drilling Fluids 15 2.1 Drilling Fluid Systems 15 2.1.1 Functions of Drilling Fluids 15 2.1.2 Types of Drilling Fluids 16 2.1.3 Drilling Fluid Selection 17 2.1.4 ... Solids from Drilling Fluids 20 2.2 Characterization of Solids in Drilling Fluids 25 2.2.1 Nature of Drilled Solids and Solid Additives 25 2.2.2 Physical Properties of Solids in Drilling Fluids 26 ... 12.11 Heavy Drilling Fluids 301 13 Centrifuges 303 13.1 Decanting Centrifuges 303 13.1.1 Stokes’ Law and Drilling Fluids 308 13.1.2 Separation Curves and Cut Points 308 13.1.3 Drilling- Fluids Solids...
Ngày tải lên: 23/10/2013, 17:15
Drilling Fluids Processing Handbook P2
... CHAPTER DRILLING FLUIDS Fred Growcock M-I SWACO Tim Harvey Oiltools, Inc 2.1 DRILLING FLUID SYSTEMS 2.1.1 Functions of Drilling Fluids A drilling fluid, or mud, is any fluid that is used in a drilling ... weighting materials are added to drilling mud to achieve various desirable properties 21 Drilling Fluids Drilled solids, consisting of rock and low-yielding clays, are incorporated into the mud continuously ... water-based muds (WBMs), while nonaqueous drilling fluids (NAFs) are often referred to as oil-based muds (OBMs) or synthetic-based muds (SBMs) OBMs are based on NAFs that are distilled from crude oil; they...
Ngày tải lên: 28/10/2013, 00:15
Báo cáo khoa học: The domains carrying the opposing activities in adenylyltransferase are separated by a central regulatory domain ppt
... coefficients for these curves are usually > 0.9 The initial rates for all the proteins are expressed as a proportion of their standard activity, and the number following in parentheses is the relative ... protein sequence suggested that there were two Q-linkers flanking a central region that separated the protein into three domains (N-Q1-R-Q2-C), in contrast to the previous suggestion of a two-domain ... relative positions in the helix are indicated on the helical wheel The hydrophobic residues [32] are italicized and highlighted in red, and the hydrophilic ⁄ polar residues are in normal text (C) Schematic...
Ngày tải lên: 30/03/2014, 08:20
baker hughes inteq drilling fluids reference manual
... Drilling Fluids Reference Manual Chapter – Fundamentals of Drilling Fluids Chapter – Formation Mechanics Chapter – Water-Base Drilling Fluids Chapter – Contamination ... Fundamentals of Drilling Fluids Chapter One Fundamentals of Drilling Fluids Chapter Table of Contents Fundamentals of Drilling Fluids .1-1 Functions of Fluids 1-1 ... and non-dispersed drilling fluids are inherently more corrosive than organically treated freshwater systems Oil or synthetic-based fluids are considered non-corrosive A proper drilling fluid corrosion...
Ngày tải lên: 02/04/2014, 16:03
drilling fluids processing handbook
... Comments 11 1.6 Waste Management 13 Drilling Fluids 15 2.1 Drilling Fluid Systems 15 2.1.1 Functions of Drilling Fluids 15 2.1.2 Types of Drilling Fluids 16 2.1.3 Drilling Fluid Selection 17 2.1.4 ... cost of drilling This page intentionally left blank CHAPTER DRILLING FLUIDS Fred Growcock M-I SWACO Tim Harvey Oiltools, Inc 2.1 DRILLING FLUID SYSTEMS 2.1.1 Functions of Drilling Fluids A drilling ... 12.11 Heavy Drilling Fluids 301 13 Centrifuges 303 13.1 Decanting Centrifuges 303 13.1.1 Stokes’ Law and Drilling Fluids 308 13.1.2 Separation Curves and Cut Points 308 13.1.3 Drilling- Fluids Solids...
Ngày tải lên: 02/04/2014, 16:03
Báo cáo khao học: "Heterogeneity and differentiation of the tree flora in three major land uses in Guangzhou City, China" pps
... Whereas some species are shared amongst two or three forest types, others are unique to one (tables III and IV) A Table I Basic and derived quantitative attributes of the three urban forest types ... forest into three major types with reference to land use and location, namely institutional, park and roadside A stratified sampling strategy was designed based on this subdivision The study area ... heterogeneity of tree species in three major habitats, namely institutional grounds, urban parks, and roadsides STUDY AREA AND METHODS The study focuses on the central built-up areas of Guangzhou, the...
Ngày tải lên: 08/08/2014, 14:20
Báo cáo toán học: "Partitioning 3-colored complete graphs into three monochromatic cycles" ppsx
... between A2 , A4 in color There are two basic types for the connected components of the required partition into three connected matchings, one is when the components have three different colors, called ... A4 ) are colored 1, in B(A1 , A3 ) and B(A2 , A4 ) are colored 2, and B(A1 , A4 ) and in B(A2 , A3 ) are colored Inside each part the edges are colored arbitrarily One can easily observe that ... V (M1 ) are colored or 3, thus these vertices are connected in, say, color Take a maximum matching M2 in color Again, since M2 is maximal, all edges in V (Kn ) \ (V (M1 ) ∪ V (M2 )) are colored...
Ngày tải lên: 08/08/2014, 14:22
An investigation into English major freshmen's perceptions on, attitudes towards and perferences for teacher's written corrective feedback at Hanoi University o
... INTERNATIONAL STUDY FACULTY OF POST-GRADUATE STUDIES NGUYỄN THỊ ĐAN QUẾ AN INVESTIGATION INTO ENGLISH MAJOR FRESHMEN’S PERCEPTIONS ON, ATTITUDES TOWARDS AND PERFERENCES FOR TEACHER’S WRITTEN...
Ngày tải lên: 28/03/2015, 09:21
An investigation into English major freshmen's perceptions on, attitudes towards and perferences for teacher's written corrective feedback at HU
... there are corrective and evaluative feedbacks (1992) Within the framework of this paper, I just want to focus on teacher’s written corrective feedback in the context of ESL writing Researching into ... towards teacher’s written corrective feedback from English major freshmen at Hanoi University of Industry This study is undertaken in three writing classes which utilize portfolio assessment, ... providing feedback match students’ expectations or still presents a mismatch Furthermore, being aware of students’ perceptions and preferences towards teacher feedback helps teachers to find appropriate...
Ngày tải lên: 10/08/2015, 19:50
The three things you need to know before you meet with an investor by geoffrey byruchif you are looking to invest, here are the top three things you need to known before meeting with an investor
... is simply through the confidence, knowledge, and planning you are able to bring into each and every meeting Below you will find three big angles you need to perfect before meeting with any type ... 1 P E R F E C T Y O U R S T O RY • When you we are talking about your story, we are not asking for you just to talk about the product • We are looking for you to talk about the overall holistic ... enhance it Be prepared to tell them what your company does, who you are, and how you got there 2 KNOW THE NUMBERS W H E N I T C O M E S D O W N I T, Y O U WANT TO MAKE SURE YOU ARE C O M F O R...
Ngày tải lên: 30/11/2015, 10:37
An investigation into the reality of teaching and learning speaking skills to the 2nd year non-major english students at pre-intermediate level of proficiency at hanoi university of industry
... GRADUATE STUDIES -***** - HOÀNG BÍCH THỦY AN INVESTIGATION INTO THE REALITY OF TEACHING AND LEARNING SPEAKING SKILLS TO THE 2ND YEAR NON -MAJOR ENGLISH STUDENTS AT PREINTERMEDIATE LEVEL OF PROFICIENCY ... certify that the minor thesis entitled: “An investigation into the Reality of Teaching and Learning Speaking Skills to the 2nd year non -major English students at Pre-Intermediate level of Proficiency ... situation of teaching and learning speaking English to the year non -major English students would be made The thesis consists of three main parts: the introduction, the development, and the conclusion...
Ngày tải lên: 07/11/2012, 14:50
An investigation into english reading strategies employed by ethnic minority junior first-year english major students at tay bac university
... learning strategies are behavioral, and therefore, they are mostly observable However, many studies in this field have shown that learning strategies are difficult to observe as they are not only behavioral ... Chamot 's framework, three major types of strategies are distinguished in accordance with the information processing model, on which their research is based Metacognitive strategies are "higher order ... learning strategies are both mental and behavioral (therefore both observable and unobservable), and learning strategies are individually characterized (i.e every learner's strategies are different)...
Ngày tải lên: 07/11/2012, 14:54
AN INVESTIGATION INTO COOPERATIVE LEARNING IN NON ENGLISH MAJOR MULTILEVEL CLASSES AT THAI NGUYEN UNIVERSITY OF EDUCATION
... students (open, alert, flexible, not too strict) + 41 Ss are involved and attentive +- 42 T is friendly and accommodating 43 T and Ss are equally active 44 There is a cooperative atmosphere in ... with students (open, alert, flexible, not too strict) 43 Ss are involved and attentive + 44 T is friendly and accommodating 45 T and Ss are equally active +- +- +- 46 There is a cooperative atmosphere ... with students (open, alert, flexible, not too strict) 43 Ss are involved and attentive 44 T is friendly and accommodating 45 T and Ss are equally active 46 There is a cooperative atmosphere in...
Ngày tải lên: 29/01/2014, 10:58
MARKETING DURING A DOWNTURN: INSIGHTS INTO HOW MARKETERS ARE HANDLING THE SLUMP pot
... than ,000 employees 4.52% are executive management 23.47% are middle management 6.6% are executive directors 3% are execution staff 6% are other 8% of respondents are from the US and Canada, ... expensive; therefore, they are a natural irst category to cut Only 7% of respondents are increasing investment in this area: 33% are not changing investment while 59% are decreasing it Print advertising ... smaller companies are still growing and need to grow marketing to gain market share Many mid-sized companies are in growth mode as well Executives at Indicative Software, for example, are increasing...
Ngày tải lên: 06/03/2014, 21:20
Nano means one billionth major aspects of nanotechnology what is it how did it come about what are the social implications
... Major Aspects of Nanotechnology •What is it? •How did it come about? •What are the social implications? •What does this mean for the ... Manipulating individual atoms and manufacturing from the bottom up Major Aspects of Nanotechnology •What is it? •How did it come about? •What are the social implications? •What does this mean for the ... molecular level A nano-motor manipulated by two laser beams Major Aspects of Nanotechnology •What is it? •How did it come about? •What are the social implications? •What does this mean for the...
Ngày tải lên: 15/03/2014, 22:13
Báo cáo khoa học: Three novel carp CXC chemokines are expressed early in ontogeny and at nonimmune sites ppt
... CXCL12b compared with human CXCL12a and CXCL12b Exons are indicated in scale by open boxes The 5¢-UTR and 3¢-UTR are indicated by grey boxes Note that zebrafish CXC12a and CXCL12b are duplicate ... organization of zebrafish CXCL14 compared with human CXCL14 Exons are indicated in scale by open boxes The 5¢-UTR and 3¢-UTR are indicated by grey boxes Accession numbers are as follows: zebrafish CXCL14, ... vitro inducibilities are analogous to those of the majority of mammalian CXC chemokines and indicate an immune function Here we report the sequences and expression patterns of three novel carp CXC...
Ngày tải lên: 16/03/2014, 18:20
Báo cáo Y học: O-GalNAc incorporation into a cluster acceptor site of three consecutive threonines Distinct specificity of GalNAc-transferase isoforms pot
... (c) are likely to contain FITC– PTTT*PLK and FITC–PT*TT*PLK, respectively, although the possibility that they are FITC–PTT*TPLK and FITC–PT*T*TPLK, cannot be excluded The presence of the three major ... Thr [21] Thus, our findings are consistent with prior reports In addition, we are also able now to delineate the structural basis that regulates GalNAc incorporation into three consecutive Thr residues ... FITC–PTTTPLK bearing either one, two, or three glycosylated residues (Fig 2) Thus, peaks (b) and (c) apparently contained two GalNAc residues and peaks (d) and (e) apparently contained a single GalNAc...
Ngày tải lên: 17/03/2014, 10:20
Báo cáo khoa học: The three typical aspartic proteinase genes of Arabidopsis thaliana are differentially expressed docx
... The three predicted proteins from monocots are grouped together while the protein from a tomato gene appears in a distinct branch Interestingly, the three predicted proteins from C cardunculus are ... and AtPasp A3 genes are each missing one of these introns (in different places), but all other introns are 4678 X Chen et al (Eur J Biochem 269) Ó FEBS 2002 Fig Comparison of three aspartic proteinase ... sequences are compared to the cardosin A from C cardunculus (CcA; accession no AJ132884 [20]) and the barley aspartic proteinase (Hv; accession no X56136 [18]) The regions of the sequence are identified...
Ngày tải lên: 17/03/2014, 11:20