Membrane Efficiency in Shale - An Empirical Evaluation of Drilling Fluid Chemistries and Implications for Fluid Design

2002 ◽  
Author(s):  
R. Schlemmer ◽  
J.E. Friedheim ◽  
F.B. Growcock ◽  
J.B. Bloys ◽  
J.A. Headley ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Empirical Evaluation ◽  
Fluid Design

Optimization of Drilling Fluid Design for Managing Wellbore Instability in K-Shale in the Malay Basin of Peninsular Malaysia

2002 ◽  
Author(s):  
C.P. Tan ◽  
Mohd Azriyuddin Yaakub ◽  
X. Chen ◽  
D.R. Willoughby ◽  
Pauziyah Abdul Hamid ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Peninsular Malaysia ◽  
Wellbore Instability ◽  
Fluid Design

EVALUATION OF THE WINDALIA SAND, BARROW ISLAND AN EMPIRICAL APPROACH

1970 ◽  
Vol 10 (1) ◽  
pp. 91 ◽  
Author(s):  
J. W. Burdett ◽  
J. C. Parry ◽  
S. P. Willmott
Keyword(s):  
Bulk Density ◽  
Transit Time ◽  
Evaluation Method ◽  
Water Saturation ◽  
Drilling Fluid ◽  
Empirical Evaluation ◽  
High Porosity ◽  
Fluid Density ◽  
Injection Wells ◽  
Standard Format

The Barrow Island oilfield derives 97 percent of its 46,000 barrels per day production from the Lower Cretaceous Windalia Sand. The lithology of the sand, which is 110' + 20' thick across the field, is very finegrained, glauconitic sandstone, shaly and silty in parts and varying from moderately unconsolidated to firm. Thin, hard beds of dolomitic and calcareous, sandstone occur throughout. The sand has high porosity and low permeability.The argillaceous and unconsolidated nature of the formation precludes the use of log interpretation methods based on standard parameters, and it was decided to develop an empirical log evaluation method. In order to calibrate the logs, sixteen of the early wells were fully cored and logged, and the data compared using the Holgate method, which allows two parameters to be correlated to determine their relationship. In the example which is the subjert of this paper, core porosity was correlated against both sonic transit time and bulk density and hence calibration of these log parameters was obtained.The best fit straight line relating porosity and sonic transit time has its origin at 76 microseconds per foot and extrapolates to 246 microseconds per foot at 100 percent porosity. The bulk density — porosity cross plot gives a grain density of 2.71 grams per cubic centimetre and fluid density of 1.16 grans/ cc. The deviations from the standard parameters of delta-t matrix = 56. delta-t fluid = 189, grain density = 1.65, fluid density = 1.0 are explained by the shaliness and lack of compaction of the formation. Using charts for the calculation of water saturation and porosity from induction conductivity and sonic transit time (or bulk density) at 2' intervals through the sand, backed up with traced SP and caliper curves, an evaluation plot of standard format is developed. Intervals of nett effective pay are then chosen.Other evaluation techniques used during the development of the Windalia Poo! include a modified movable oil plot, used in the water injection wells where a saturated saline drilling fluid was employed, and a Sonic-Neutron log comparison for the identification of suspected gas columns in the Windalia.440 wells have now been drilled at Barrow Island, and the empirical evaluation methods evolved have enabled the definition of beds of producible hydrocarbons in all cases.

The Research of Case Matching Algorithm in Drilling Fluid Design Expert System

2013 ◽  
Vol 321-324 ◽  
pp. 2209-2213
Author(s):  
Jian Li ◽  
You Xiao ◽  
Yue Luo
Keyword(s):  
Expert System ◽  
Nearest Neighbor ◽  
Design Method ◽  
Drilling Fluid ◽  
Case Based Reasoning ◽  
Fluid System ◽  
Matching Algorithm ◽  
Design Expert ◽  
Representation Method ◽  
Fluid Design

In the case-based reasoning in drilling fluid design expert system, it selects the corresponding representation method of attributes and matching algorithm according to the characteristics of drilling fluid system and the formulation. The representation methods of attributes in this article include digital, string and range these three methods, therefore, the corresponding matching algorithms also have nearest-neighbor, string matching and range matching these three algorithms. On this basis, and combined with the single parent genetic algorithm to optimize the initial weights combination, we can get the most optimal and realistic drilling fluid system and formula. This design method can greatly improve the efficiency and accuracy of the drilling fluid formula design.

Innovative Drilling Fluid Design and Rigorous Pre-Well Planning Enable Success in an Extreme HTHP Well

2000 ◽  
Author(s):  
D.J. Oakley ◽  
K. Morton ◽  
A. Eunson ◽  
A. Gilmour ◽  
D. Pritchard ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Fluid Design

Ultra-HPHT Drilling Fluid Design for Frontier Deep Gas Exploration in South Malay Basin

2014 ◽  
Author(s):  
Anuradee Witthayapanyanon ◽  
Kathi Chandramouleeswaran ◽  
Ahmad Bin Dollah ◽  
Dennis Clapper ◽  
Ronald Bland ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Fluid Design

SUMHOLE DRILLING: WELLBORE STABILITY CONSIDERATIONS BASED UPON FIELD AND LABORATORY DATA

1996 ◽  
Vol 36 (1) ◽  
pp. 544
Author(s):  
M.A. Addis ◽  
R.G. Jeffrey
Keyword(s):  
Field Data ◽  
Drilling Fluid ◽  
Laboratory Data ◽  
Petroleum Industry ◽  
Cost Savings ◽  
Wellbore Stability ◽  
Wellbore Instability ◽  
Attractive Option ◽  
Different Diameters ◽  
Fluid Design

Slimhole drilling is becoming an attractive option as it provides significant cost savings in the petroleum industry. Furthermore, many of the technical obstacles in adapting slimhole drilling for the petroleum industry have been addressed, such as rig modifications, small volume kick detection, drilling fluid design, etc. However, wellbore stability in slimholes is largely taken for granted, when it could potentially increase costs dramatically. In this paper, a review of the available information on the effects of hole size on hole stability is presented. Wellbore stability in holes of different diameters is discussed qualitatively based on published laboratory data and unpublished field data. The quantitative assessment of wellbore instability in slimholes is addressed using observations of instability in a well in which the far field stresses were measured.The field data presented here suggest that slimhole wells are not more stable than conventional wells. The slimhole drilled in NSW shows that even using the most conservative prediction model, wellbore instability would not be predicted—instability was however, observed.

Integrated Drilling Engineering Design System Based on Web Services

2012 ◽  
Vol 482-484 ◽  
pp. 1874-1880
Author(s):  
Zhi Kun Liu ◽  
Qi Li ◽  
Hong Shan Liu ◽  
Liang Wen
Keyword(s):  
Web Services ◽  
Engineering Design ◽  
Collaborative Design ◽  
Drilling Fluid ◽  
Design System ◽  
Drilling Engineering ◽  
Cross Platform ◽  
Fluid Design ◽  
Design Result ◽  
Engineering Staff

Direct towards the current research status of domestic drilling design, according to the characteristics of distributed, cross-platform and openness in Web Services, It is proposed to build a integrated drilling engineering design system included design basis, data support, drilling engineering design, cementing design, drilling fluid design and management of design result under the network environment using Web Services technology. The system would accomplished using Oracle9i and VS2008, so that it would become a reality that more drilling engineering staff or design staff distributed in different parts in a unified software platform for collaborative design.

Successful Mitigation of Time-Dependent Shale Instability in Khafji Field through Drilling Fluid Design Optimization

2009 ◽  
Author(s):  
Chee Phuat Tan ◽  
Marwan Ahmad Qadmani ◽  
Magdalena Povstyanova ◽  
Mohammed Ahmed Mohiuddin ◽  
Mohd Helmi Abd Rahim
Keyword(s):  
Design Optimization ◽  
Drilling Fluid ◽  
Time Dependent ◽  
Fluid Design
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