Integrated High Technology of Formation Evaluation and Directional Drilling - Key Inputs for Well Placement in a Complex Structural Environment -- A Case Study

2000 ◽  
Author(s):  
R.H. van den Bosch ◽  
L.P. Meier ◽  
U. Rohde ◽  
M. Frass
Keyword(s):  
High Technology ◽  
Directional Drilling ◽  
Well Placement ◽  
Formation Evaluation ◽  
Structural Environment ◽  
Complex Structural

Lean Optimization on Well Placement: Directional Drilling Operations in South of Oman Wells: A Case Study

2016 ◽  
Author(s):  
Nasser Al Kindi ◽  
Qasim Al Shehhi ◽  
Abdullah Al Adwani ◽  
Saud Al Habsi ◽  
Roy Emanuel
Keyword(s):  
Directional Drilling ◽  
Well Placement ◽  
Drilling Operations

Unconventional Engineering Toward Efficient Geosteering and Well Placement - Logging-While-Drilling in an Oil-Based Mud Environment

2021 ◽  
Author(s):  
Salaheldeen S Almasmoom ◽  
Gagok I Santoso ◽  
Naif M Rubaie ◽  
Javier O Lagraba ◽  
David B Stonestreet ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Horizontal Well ◽  
New Technology ◽  
Significant Risk ◽  
Directional Drilling ◽  
Cross Sectional ◽  
Well Placement ◽  
Formation Evaluation ◽  
Logging While Drilling ◽  
New Generation

Abstract This paper presents a success story of deploying new technology to improve geosteering operations in an unconventional horizontal well. A new-generation logging-while-drilling (LWD) imaging tool, that provides high resolution resistivity and ultrasonic images in an oil-based mud environment, was tested while drilling a long lateral section of an unconventional horizontal well. In addition to improving the geosteering operations, this tool has proven the ability to eliminate the wireline image log requirements (resistivity and ultrasonic), hence reducing rig time significantly. The LWD bottomhole-assembly (BHA) included the following components: gamma ray (GR), density, neutron, resistivity, sonic, density imager, and the newly deployed dual imager (resistivity and ultrasonic). The dual imager component adds an additional 15-ft sub to the drilling BHA, which includes four ultrasonic sensors orthogonal to each other, and two electromagnetic sensors diametrically opposite to each other (reference figure 1). This new technology was deployed in an unconventional horizontal well to help geosteer the well in the intended zone, which led to an improvement in well placement, enhanced the evaluation of the lateral facies distribution, and allowed better identification of natural fractures. The dual images provided the necessary information for interpreting geological features, drilling induced features, and other sedimentological features, thus enhancing the multistage hydraulic fracturing stimulation design. In addition, an ultrasonic caliper was acquired while drilling the curve and lateral section, providing a full-coverage image of the borehole walls and cross-sectional borehole size. The unique BHA was designed to fulfill all the directional drilling, formation evaluation and geosteering requirements. A dynamic simulation was done to confirm the required number of stabilizers, and their respective locations within the BHA, to reduce shock and vibration, borehole tortuosity and drilling related issues, thereby improving over-all performance. Real-time drilling monitoring included torque and drag trending, back-reaming practices and buckling avoidance calculations, which were implemented to support geosteering, and for providing a smooth wellbore for subsequent wireline and completion operations run in this well. A new generation dual-image oil-based mud environment LWD tool was successfully deployed to show the multifaceted benefits of enhanced geo-steering/well placement, formation evaluation, and hydraulic fracturing design in an unconventional horizontal well. Complexities in the multifunctioning nature of the BHA were strategically optimized to support all requirements without introducing any significant risk in operation.

scholarly journals Rotary steerable systems: mathematical modeling and their case study

2021 ◽  
Vol 11 (6) ◽  
pp. 2743-2761
Author(s):  
Caetano P. S. Andrade ◽  
J. Luis Saavedra ◽  
Andrzej Tunkiel ◽  
Dan Sui
Keyword(s):  
Directional Drilling ◽  
Steering Control ◽  
Fundamental Physics ◽  
Drilling Tools ◽  
Drilling Operations ◽  
Beam Bending ◽  
Extended Reach Drilling ◽  
And Control ◽  
2D And 3D

AbstractDirectional drilling is a common and essential procedure of major extended reach drilling operations. With the development of directional drilling technologies, the percentage of recoverable oil production has increased. However, its challenges, like real-time bit steering, directional drilling tools selection and control, are main barriers leading to low drilling efficiency and high nonproductive time. The fact inspires this study. Our work aims to contribute to the better understanding of directional drilling, more specifically regarding rotary steerable system (RSS) technology. For instance, finding the solutions of the technological challenges involved in RSSs, such as bit steering control, bit position calculation and bit speed estimation, is the main considerations of our study. Classical definitions from fundamental physics including Newton’s third law, beam bending analysis, bit force analysis, rate of penetration (ROP) modeling are employed to estimate bit position and then conduct RSS control to steer the bit accordingly. The results are illustrated in case study with the consideration of the 2D and 3D wellbore scenarios.

scholarly journals ANÁLISE DE SEGUNDA ORDEM DE ESTRUTURAS EM CONCRETO ARMADO

2021 ◽  
Vol 9 (206) ◽  
pp. 1-23
Author(s):  
Ailton Queiroz Junior ◽  
Antonio Ribeiro Santos Junior
Keyword(s):  
Global Stability ◽  
Second Order ◽  
Bending Moments ◽  
Mobile Nodes ◽  
Analysis Software ◽  
Structural Details ◽  
Overall Stability ◽  
Complex Structural ◽  
Bracing System

With the expressive increase in the demand for increasingly tall and robust constructions, plus more and more complex structural details that end up becoming a key element for the projects of the structures of the undertakings, it is important to consider the efforts made by the reinforced concrete structures are subjected. In this sense, the present work has as objective the approach of the parameters of global stability a and Yz followed by the verification of the efforts on the pavements and the displacements of the building caused by the loads acting on the structure. In this work, the use of the global stability parameter a and Yz, which is of fundamental relevance and also prescribed in NBR 6118 (ABNT, 2014), was evaluated. The use of the parameter a considered for the evaluation of the overall stability of the structure, but which is not capable of estimating second order efforts, allows us to classify a structure as being of fixed or mobile nodes. The Yz parameter, on the other hand, can be used to obtain second order efforts. To carry out this work, a case study was launched in the structural analysis software Ftool. The present analysis carried out showed that it is possible to conceive a bracing system for a building with up to 30 floors, using the pillar-wall solution having as a substitute resource for the aforementioned solution the solution of frames formed by beams and columns addressed continuously by tall building literature. Therefore, it is worth mentioning that the solution with wall pillars tends to be more expensive than the solution with frames, a system adopted in the development of this work due to the economic viability of the construction, in view of a higher consumption of materials in the superstructure and also higher costs in the construction. execution of foundations, due to the efforts that will be generated in the building (horizontal forces and bending moments).

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