ROP Optimization and Modeling in Directional Drilling Process

2017 ◽  
Author(s):  
Ekaterina Wiktorski ◽  
Artem Kuznetcov ◽  
Dan Sui
Keyword(s):  
Drilling Process ◽  
Directional Drilling

Observer‐based trajectory control for directional drilling process

2021 ◽  
Author(s):  
Zhen Cai ◽  
Xuzhi Lai ◽  
Min Wu ◽  
Luefeng Chen ◽  
Chengda Lu
Keyword(s):  
Trajectory Control ◽  
Drilling Process ◽  
Directional Drilling

scholarly journals The Method of Cluster Drilling in the Western Ural as the Beginning of the Technical and Economic Revolution in the World Drilling

TECHNOLOGOS ◽  
2020 ◽  
pp. 47-57
Author(s):  
Neroslov Alexey
Keyword(s):  
Large Scale ◽  
High Efficiency ◽  
Oil Industry ◽  
Advanced Technology ◽  
Innovative Technology ◽  
Drilling Process ◽  
Directional Drilling ◽  
North Caucasus ◽  
The World ◽  
The City

In 1943, at the height of the Great Patriotic War, the new revolutionary drilling technique with high efficiency was used in Krasnokamsk oilfield of Molotov (Perm) Oblast for the first time in the world – the cluster turbodrilling method. The development of oil industry in Prikamye in the 1940s was associated with certain complications. The main deposits of the Krasnokasmk oilfield discovered before the war turned out to be located due to a number of reasons within the area of industrial and residential construction of the city of Krasnokamsk and under the Kama river and the Paltinskoye swamp close to the city. Conventional drilling methods could not be used for their development. The way out was to use the method of directional drilling that was little known at that moment. The development of the innovative technology in Krasnokamsk oilfield in 1942 was largely due to the involvement of the specialists of the Experimental Turbodrilling Bureau evacuated from Baku. Directional drilling which involved the deviation of the bottom hole (the ultimate lowest point of the well) from the wellhead (the initial uppermost location) by several hundred metres opened up broad opportunities for developing hard-to-recover oil deposits while significantly accelerating and ensuring cost savings of the drilling process. The directional drilling served as the basis for the development in Prikamye of an advanced technology of cluster drilling when several directional wells with different azimuths were drilled from a small well pad. In 1943–1944, cluster drilling was tested and successfully used in Krasnokamsk oilfield. The cluster drilling comprised an entire range of innovative solutions including the movement of assembled drilling rigs without dismantling power equipment. Also, it resulted in the reduction of total labour costs, scope of construction and assembly works, costs of building oilfield roads, power lines and pipelines, and transportation costs. People’s Commissariat of Oil Industry of the USSR initiated a large-scale rollout of the advanced method of cluster drilling in the largest oil-producing regions of the Soviet Union – Azerbaijan and the North Caucasus, and the area of the “second Baku” – Bashkiria, Tatary, and Kuybyshev oblast. The transition to the advanced and cost-saving technology of cluster drilling laid the foundation for the technical and economic revolution of the world drilling practices.

scholarly journals Research on the measurement system of drilling while engineering parameters for intelligent drilling in coal mine

2020 ◽  
Vol 165 ◽  
pp. 03036
Author(s):  
Lian Jie
Keyword(s):  
Real Time ◽  
Drilling Process ◽  
Construction Process ◽  
Directional Drilling ◽  
Drilling Tool ◽  
Intelligent Decision Making ◽  
Intelligent Decision ◽  
Drilling Technology ◽  
Engineering Parameters ◽  
Parameter Measuring

In order to ensure safe and efficient mining and improve the efficiency of drilling construction, intelligent drilling technology has been studied in China. This technology is another development on the basis of automation. In addition to the automatic execution of the construction process, it also has the characteristics of intelligent perception, intelligent decision-making and intelligent correction. This technology requires engineering parameter measuring equipment to obtain the engineering parameters such as torque, WOB, inner and outer annulus pressure, rotation speed, vibration, temperature, etc. near the drill bit at the bottom of the hole in real time, so as to realize the real-time monitoring of the drilling process parameters at the bottom of the hole and the stress state of the drilling tool in the process of directional drilling, and increase the effective extraction distance of the drilling hole.

Optimizing Directional Drilling While Simultaneously Maximizing the Whole Life Value of the Well

2021 ◽  
Author(s):  
John Martin Clegg
Keyword(s):  
Performance Indicator ◽  
Production Equipment ◽  
Drilling Process ◽  
Directional Drilling ◽  
Time Curve ◽  
Rate Of Penetration ◽  
Drilling Parameters ◽  
Drilling System ◽  
The Impact

Abstract Increasingly complex wells and longer laterals present new challenges for wellbore placement and wellbore quality. There is a growing understanding of the impact of well placement and wellbore quality on the overall value of the well and on the economics of completions and production. This paper looks at how requirements have evolved and will evolve beyond simply "getting to TD" as quickly as possible and how emerging technologies can help. There is already an undercurrent of opinion that completions and production are sometimes compromised to maximize rate of penetration, but with some controversy about the exact value and how easy it is to attribute cause. This paper reviews how directional drilling practice has evolved over 100 years, and how the wellbore quality that results from the directional drilling process can be a driver for the overall value of the well. Specifically, it draws on a number of key references to examine how tortuosity doesn't just have an influence on drilling but also how it can adversely impact completions, reliability of production equipment and even production rates. The paper proposes that we consider the whole-life value of the well as a key performance indicator as we drill. It emphasises that we must cease to focus solely on rate of penetration and the depth-time curve. The paper shows, with examples, how modern directional drilling systems can address tortuosity and improve wellbore quality. It presents an unbiased view of the industry from an independent viewpoint, exploring how directional drilling has been partially automated over the years and examining the state of the art in current automated directional drilling systems. It proposes the need for a modern directional drilling system not just in terms of drilling parameters but also in terms of automation of geometric and, ultimately, geologic aspects of directional drilling. The paper is intended to break down the silos that can exist between drilling, completions and production functions, and to help the industry to think about the long-term consequences of performance when specifying future directional drilling equipment.

Control of Rotary Steerable Toolface in Directional Drilling

2015 ◽  
Author(s):  
Madhu Vadali ◽  
Yuzhen Xue ◽  
Xingyong Song ◽  
Jason Dykstra
Keyword(s):  
Disturbance Rejection ◽  
State Feedback ◽  
Controller Design ◽  
Fast Response ◽  
Drilling Process ◽  
Directional Drilling ◽  
Dynamics Model ◽  
External Disturbances ◽  
Drilling System ◽  
Do So

This paper presents a detailed mathematical model of a rotary steerable drilling system (RSS) that adopts hydro-electromechanical devices to generate bending torque in adjusting the toolface (TF). Key requirements of RSS are to adjust the TF promptly to track the TF command, to maintain the TF in presence of the external disturbances, and to do so during the drilling process. Accordingly, a controller with a fast response time and effective disturbance rejection capability is desired for the RSS. The complexity and non-linearities of the RSS creates additional challenges to the controller design. This paper describes a simple and effective controller scheme that is designed based on the analysis of the system’s dynamics model. By decoupling the disturbances, physical state feedback, and non-linearities, the RSS can be controlled by using a simple and effective proportional-integral-derivative (PID) controller with the desired performance. The simulation results show that the proposed controller is effective against the disturbance and the variations of the parameters.

Technology Focus: Drilling Automation and Innovation (February 2021)

2021 ◽  
Vol 73 (02) ◽  
pp. 44-44
Author(s):  
Michael H. Weatherl
Keyword(s):  
Carbon Footprint ◽  
Deep Water ◽  
Oil Sands ◽  
Large Scale ◽  
World Population ◽  
Drilling Process ◽  
Directional Drilling ◽  
Full Spectrum ◽  
The Past ◽  
Co2 Intensity

Drilling automation and innovation continue as dominant trends despite market downturns and unprecedented challenges in the past year. In many ways, the drive toward new efficiencies and step changes in well-construction performance has taken on an even greater sense of urgency. Further advancements in automation and innovation in well construction are recognized globally as keys to unlocking new opportunities in the ever-changing world in which we live. OTC Live sessions in late 2020 included a fascinating session titled “Opportunities and Challenges in Frontier Basins and Emerging Offshore Areas.” Despite pandemic-induced uncertainty, a significant number of high-impact exploration efforts, including projects in deepwater Gulf of Mexico, Brazil, west Africa, the Mediterranean, and Asia were ongoing. Panelists agreed, given world population and energy consumption being forecast to grow 20% by 2040, that increased hydrocarbon supplies, in addition to renewables, are essential to meeting future demand. The discussion also highlighted increased emphasis on carbon footprint reduction. Leaders from Shell, Expro, Wood Mackenzie, and others spoke to a CO2-intensity/barrel of oil equivalent chart comparing relative values for deep water, unconventionals, oil sands, and liquefied natural gas. It is noteworthy that deepwater production represents the lowest carbon footprint of all hydrocarbon sources by a significant margin. This advantage, combined with the potential for large resource size, high flow rates, and low well count, suggest that deepwater assets will compete in long-term portfolios for many operators. Referring to the current selection of SPE drilling-related manuscripts, automation of land rigs within onshore unconventional basins remains a widely published subject. More specifically, automation of the directional drilling process continues to yield improvements in performance and efficiency. It is often noted that well costs have been reduced by more than 50% with advancements related to horizontal technology, digitalization of well construction, and rig automation. These technologies were largely initiated within onshore, unconventional projects, but application is now wide-spread for offshore, complex wells. Selected papers in this feature are chosen to highlight the latest achievements and near-term opportunities across the full spectrum of upstream projects. A consistent message from paper SPE 203251 regarding drilling automation in the digital age reads, “industry has yet to benefit on a large scale from these advancements and…significant value remains untapped.” This reoccurring theme appears across operator and geographical boundaries, revealing significant opportunity and the need for ongoing emphasis. Software and hardware evolution progresses along with more- comprehensive integration of rig equipment and functionality. Industry now is more focused on moving from automation of individual tasks toward automation of the full well-construction process from plan to completed borehole. This idea is presented in paper SPE 201763. Change management remains a key issue within the process to ensure adequate control, early buy-in from stakeholders, and strong leadership. In summary, impressive examples of ongoing innovation span domestic unconventional plays, remote/international locations, geologically complex thrustbelt fields, and deep water with managed-pressure drilling in narrow pore pressure/fracture gradient environments. The few selections that appear here are a reflection of many more published by SPE in the past year and are a powerful testament to the ingenuity and perseverance of those involved.

scholarly journals Trajectory Azimuth Control Based on Equivalent Input Disturbance Approach for Directional Drilling Process

2021 ◽  
Vol 25 (1) ◽  
pp. 31-39
Author(s):  
Zhen Cai ◽  
Xuzhi Lai ◽  
Min Wu ◽  
Chengda Lu ◽  
Luefeng Chen ◽  
...  
Keyword(s):  
State Space Model ◽  
System Stability ◽  
Linear Matrix ◽  
Drilling Process ◽  
Drill Bit ◽  
Directional Drilling ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Input Disturbance ◽  
Equivalent Input Disturbance

This paper concerns with trajectory azimuth control in directional drilling. The motion process of the drill bit and a series of stabilizers are described, and a state-space model of the trajectory azimuth is constructed. The scheme of the trajectory azimuth control system is designed based on the equivalent input disturbance approach. An internal model is inserted to track the drill bit to improve the quality of the drilling trajectory. A state observer is combined with a low-pass filter to estimate the trajectory azimuth by measuring the azimuth of the bottom hole assembly (BHA). The control parameters can be obtained by the condition of system stability, which is derived in terms of linear matrix inequalities. A typical case is used to illustrate the validity and robustness of our approach.

scholarly journals Transportation of Cuttings in Inclined Wells

2018 ◽  
Vol 2 (2) ◽  
pp. 3-13
Author(s):  
Maha R. A. Hamoudi ◽  
Akram H. Abdulwahhab ◽  
Amanj Walid Khalid ◽  
Deelan Authman ◽  
Rebin Ali Mohammed Ameen
Keyword(s):  
Flow Rate ◽  
Penetration Rate ◽  
Drilling Fluid ◽  
Drilling Process ◽  
Transport Mechanisms ◽  
Directional Drilling ◽  
Hole Cleaning ◽  
Gravitational Forces ◽  
Pump Flow Rate ◽  
Spread Sheet

One of the most important functions performed by drilling fluid is the removal of cutting from the bottom of the hole to the surface. This function must be performed efficiently if not, the cuttings produced during drilling process will accumulate in the annulus. This problem in directional drilling is featured by gravitational forces. Problems resulting from inefficient cutting transport include pipe stuck, wear of bit, reduction in penetration rate, high torque and drag with many other problems encountered. In high angle deviated wells, the cutting goes through a complex path to the surface where some of the cuttings gravitate to the low side of the well. Reduction in any problem associated with improper cutting transport require good understanding in cutting transport mechanisms. This research focuses on calculating the minimum annular velocity of drilling fluid and minimum pump flow rate which is required to achieve hole- cleaning and lifting of the cutting to the surface, taking into consideration the main parameters that affect the coring capacity of the drilling fluid, for this purpose, data of a deviated well (X) located in Kurdistan region of Iraq is collected to determine slip velocity, annular velocity, critical flow rate and carrying capacity index taking in consideration the mud used and the angle of the deviation using the drilling formula spread sheet V1.6.

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