A New Method for Designing 3D Trajectory in Sidetracking Horizontal Wells Under Multi-constraints

1999 ◽  
Author(s):  
Jiang Shengzong ◽  
Wang Xilu ◽  
Cao Limin ◽  
Liu Kunfang
Keyword(s):  
Horizontal Wells ◽  
New Method

NEW METHOD OF IMPULSIVE ELECTROMAGNETIC LOGGING SOUNDING: MAPPING OF THE BAZHENOVSKAYA FORMATION FROM JURASSIC RESERVOIRS PENETRATED BY INCLINED-HORIZONTAL WELLS

2021 ◽  
pp. 31-39
Author(s):  
M. I. Epov ◽  
◽  
V. N. Glinskikh ◽  
M. N. Nikitenko ◽  
K. V. Sukhorukova ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Numerical Modeling ◽  
Middle Jurassic ◽  
High Sensitivity ◽  
Horizontal Wells ◽  
New Method ◽  
Electromagnetic Sounding ◽  
Bazhenov Formation ◽  
Spatial Locations

The work is devoted to the substantiation of new geophysical technology for mapping the Bazhenovskaya Formation based on an impulsive electromagnetic sounding from wells. Theoretically shown the possibility of its application to study the formation from highly inclined and subhorizontal wells drilled in the Upper and Middle Jurassic formations. Numerical modeling of the signals in realistic geoelectric models of the Bazhenov Formation with real well trajectories is carried out on the example of the East Surgut field. The calculations have established that the determination of spatial locations of the top and bottom of the beds is possible when using different-length sondes. Zones of high sensitivity of the full magnetic field matrix to the boundaries with a sufficient signal level at considerable distance, even with a small sonde length, are determined. It is theoretically established that pulsed sounding of the Bazhenov Formation from the Upper and Middle Jurassic reservoirs is feasible for both mapping the boundaries of the formation and tracing its lateral variability.

A NEW METHOD OF DECLINE CURVE FORECASTING FOR PROJECT WELLS ON THE BASE OF MACHINE LEARNING ALGORITHMS

2020 ◽  
pp. 69-74
Author(s):  
S.I. Gabitova ◽  
L.A. Davletbakova ◽  
V.Yu. Klimov ◽  
D.V. Shuvaev ◽  
I.Ya. Edelman ◽  
...  
Keyword(s):  
Machine Learning ◽  
Learning Algorithms ◽  
Horizontal Wells ◽  
Machine Learning Algorithms ◽  
New Method ◽  
Well Completion ◽  
Decline Curve ◽  
Forecasting Method ◽  
Decline Curves

The article describes new decline curves (DC) forecasting method for project wells. The method is based on the integration of manual grouping of DC and machine learning (ML) algorithms appliance. ML allows finding hidden connections between features and the output. Article includes the decline curves analysis of two well completion types: horizontal and slanted wells, which illustrates that horizontal wells are more effective than slanted.

Crosswell monitoring using virtual sources and horizontal wells

Geophysics ◽  
2010 ◽  
Vol 75 (3) ◽  
pp. SA37-SA43 ◽  
Author(s):  
Joongmoo Byun ◽  
Jeongmin Yu ◽  
Soon Jee Seol
Keyword(s):  
Heavy Oil ◽  
Synthetic Data ◽  
Horizontal Wells ◽  
Time Lapse ◽  
Potential Change ◽  
New Method ◽  
Virtual Source ◽  
Vertical Wells ◽  
Monitoring Method ◽  
First Arrival

Time-lapse crosswell seismic provides an efficient way to monitor the migration of a [Formula: see text] plume or its leakage after [Formula: see text] injection into a geologic formation. Recently, crosswell seismic has become a powerful tool for monitoring underground variations, using the concept of a virtual source, with virtual sources positioned at the receivers installed in the well and thus the positions of sources and receivers can be invariant during monitoring. However, time-lapse crosswell seismic using vertical wells and virtual sources has difficulty in describing the front of a [Formula: see text] plume, which usually is parallel to the vertical wells, and in obtaining sufficient ray coverage for the first-arrival tomography. These problems arise because of the theoretical downward-illumination-directivity limitation of the virtual source. We have developed an effective monitoring method that uses virtual sources and two horizontal wells: one above and one below the [Formula: see text]sequestration reservoir. In our method, we redatum the traces that are recorded at geophones in horizontal wells from sources on the surface. The redatumed traces then become virtual traces recorded at geophones in the lower well and sent from virtual sources at the positions of the geophones in the upper well. The geometry of our method has advantages for locating the front of the [Formula: see text] plume, which is normal to the horizontal wells, compared with either real or virtual sources. The method also is advantageous in acquiring full ray coverage between the wells, and that coverage is superior to coverage acquired using vertical crosswell seismic with virtual sources. In addition, we can avoid problems related to any potential change in the medium above the reservoir and in the source and receiver positions. The results of applying our method to synthetic data that simulate [Formula: see text]-sequestration monitoring show that the front of a [Formula: see text] plume in the reservoir is depicted accurately in a velocity tomogram. The new method also can be used to monitor a reservoir during production of heavy oil.

New Method of Improving Formation Evaluation in High-Angle or Horizontal Wells Using Image-Constrained Inversion

2017 ◽  
Author(s):  
S. Syofyan ◽  
M. S. Hanif ◽  
A. I. Latief ◽  
A. L. El Gazar ◽  
T. A. Al-Shabibi ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
New Method ◽  
High Angle ◽  
Formation Evaluation

A New Method of Improving Steam Injection Profile Distribution Used in Thermal Horizontal Well and Experimental Study

2012 ◽  
Vol 516-517 ◽  
pp. 228-231
Author(s):  
Xiu Xing Zhu ◽  
Shi Feng Xue ◽  
Xing Hua Tong
Keyword(s):  
Horizontal Well ◽  
New Technology ◽  
Variable Mass ◽  
Horizontal Wells ◽  
Steam Injection ◽  
Absorption Capacity ◽  
New Method ◽  
Well Yield ◽  
Profile Distribution ◽  
Injection Technology

During the production of thermal horizontal well, recovery ratio will be reduced by the deficiency of traditional steam injection methods, which include finite effective heating range, poor level of producing reserves etc. In order to improve efficiency of steam and well yield，a new method—multipoint steam injection technology is presented in this paper, which can improve steam injection profile distribution in thermal horizontal wells. Several factors including multiphase flow, pressure drop, variable mass flow and reservoir heterogeneity, are taken into consideration in this method. By the new technology, Steam injection string used in horizontal wells is divided into several independent units through applying matching equipments. Based on the optimization of steam absorption capacity of every unit, steam injection profile distribution is improved. The validation of multipoint steam injection technology and matching equipments are verified through ground simulation tests in this paper. Moreover, the influence of steam injection parameters is also analyzed.

scholarly journals A new method for monitoring wells productivity index dynamics

2021 ◽  
Vol 6 (2) ◽  
pp. 33-38
Author(s):  
L. A. Davletbakova ◽  
S. I. Gabitova ◽  
V. Yu. Klimov ◽  
D. V. Shuvaev ◽  
I. Ya. Edelman ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
New Method ◽  
Productivity Index ◽  
Daily Production ◽  
Integral Analysis ◽  
Monitoring Wells ◽  
Stock Status ◽  
Well Tests ◽  
The Moment ◽  
Start Ups

А method for monitoring wells productivity index dynamics from the moment of its start-ups is proposed. It allows detecting candidates for conducting well tests (WT) and well interventions for the increase of a daily production. The method is based on an integral analysis using pressure maps and well tests. Application of this method on the Salym group of oilfields has allowed concluding about wells stock status, about productivity index dynamics in time, also to make an assumption about the reasons for its change. The analysis showed that productivity index relative changes in horizontal wells lower than in slanted wells.

A New Method for Remote Sensing of Critical Stratigraphic Bed Boundaries and Reservoir Positioning of Horizontal Wells

1998 ◽  
Author(s):  
J.V. Leggett ◽  
V.S. Dubinsky ◽  
E.I. Nakken ◽  
R. Viken ◽  
S.E. Sandvik ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Horizontal Wells ◽  
New Method
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