A Novel Fourble Land Rig and its Application in Ultra Deep Well Drilling

2021 ◽  
Author(s):  
Peng Chen ◽  
Junjie Wang ◽  
Mingming Ding ◽  
Xiuying Yang ◽  
Tuo Zhou ◽  
...  
Keyword(s):  
Tarim Basin ◽  
High Speed ◽  
Operational Efficiency ◽  
The Novel ◽  
Drilling Depth ◽  
Well Drilling ◽  
Drilling Rig ◽  
Deep Well ◽  
Pull Out ◽  
Deep Wells

Abstract A traditional land rig uses tribble in drilling operation. A novel fourble land rig using four joints as a unit has been researched and developed in order to promote operational efficiency in ultra deep well drilling. Design, overall plan and crucial techniques as well as the field application result of the fourble drilling rig are presented in this paper. The fourble land drilling rig was studied based on the conventional tribble rig which utilizes three joints as a unit or a tribble. However, the novel rig adopts four joints as a unit or a fourble. Therefore, the improvement of the drilling operational efficiency could be realized by extending the length of the stand, reducing trip time and frequency, and increasing the high speed operational time of the travelling block. The extra high derrick design, fourble handling and drum roping techniques of the 9000m fourble land rig were researched. The fourble land drilling rig with nominal drilling depth of 9,000m was designed and manufactured. The heights of the derrick and racking platform of the fouble rig were increased. The rig is able to run in hole and pull out of hole the fourble united by four joints. The high speed tripping distance gets longer, and the setback capacity gets increased. Ultra deep well drilling in the piedmont zone of Tarim basin in Xinjiang, China showed the reliable integral performance and substantial enhancement of drilling speed. The average drilling time using the fourble rig could be 15%-30% decreased as compared to that of the traditional tribble rig. The cycle of drilling would be cut down and cost of drilling would be reduced for ultra deep wells by means of the fourble rig. Oil and gas reservoirs were deep buried in depths of 7,000m-9,000m in the submountain area of Tarim basin where the ultra deep wells drilling are increasingly growing. The novel fourble land rig was developed in high demand of efficient drilling of ultra deep wells. It filled the gap of China's drilling rig series.

scholarly journals НАУКОВІ ТЕНДЕНЦІЇ БУРІННЯ ГЛИБОКИХ НАФТОГАЗОВИХ СВЕРДЛОВИН

2019 ◽  
Vol 1 (1(31)) ◽  
pp. 18-21
Author(s):  
Мирослава Чернова
Keyword(s):  
High Pressure ◽  
Corrosion Fatigue ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Well Drilling ◽  
Gas Industry ◽  
Deep Well ◽  
Deep Wells ◽  
Deformed State ◽  
Drill Column

The essential problems in oil and gas industry are corrosion-fatigue breakage of drill column elements, sticking of drilling and heavy-weight drill pipes, taking place in drilling of directional and horizontal wells. The stickings are caused by friction, emerging between sides of hole and elements of drilling column. The frictions block assurance of core integrity in core receive. The failure resistance by using polymer and composite materials for surface treatment under influence of triboprocess and corrosion-fatigue breakage is considered in the article.The problem of deep well drilling is considered, which is connected with the prevention of the seizure phenomenon between the walls of the drill column and the barrel of deep wells. The design of the coupling connection of casing pipes with a high pressure sealing element is provided to provide the tightness of the casing columns at high pressure and temperature parameters. The elastically deformed state of the pipes with the inserted sealing element is scientifically substantiated.

Harmonic Response Analysis and Structure Modification for Substructure of Deep Well Drilling Rig

2016 ◽  
Vol 826 ◽  
pp. 45-49
Author(s):  
Jian Hua ◽  
Hong Wu Zhu ◽  
Si Zhu Zhou ◽  
Lei Hu ◽  
Hao Cui
Keyword(s):  
Response Characteristic ◽  
Response Analysis ◽  
Drilling Process ◽  
Rotary Table ◽  
Eccentric Rotation ◽  
Well Drilling ◽  
Harmonic Response ◽  
Drilling Rig ◽  
Deep Well ◽  
Harmonic Response Analysis

During the oil drilling process, the eccentric rotation of rotating devices such as rotary table may excite abnormal vibration of the drilling rig which will worsen the working condition of the rig and cause structure failure. In this paper, a ZJ70 drilling rig is taken as the study object, the harmonic response analysis of which is conducted by using FEM software and the frequency response characteristic of the substructure is obtained. Result shows the stiffness of rear substructure is insufficient. On the basis of harmonic response analysis, the modification of the substructure is carried out through enlarging the rear connection frame. Further calculation shows the first 3 order natural frequencies of the substructure are increased, thus the abnormal vibration of the substructure caused by the rotary table with certain rotation speed can be effectively reduced. In addition, the displacement response of both first two orders are greatly decreased with that of central and rear positions are respectively decreased by 17.5% and 42.1%, which demonstrates the dynamic characteristic of the substructure is significantly improved.

Dynamic Reliability Analysis of Drill String System in Deep & Ultra-Deep Well Based on the First Excursion Failure Criterion

2011 ◽  
Vol 291-294 ◽  
pp. 2222-2225
Author(s):  
Shang Yu Yang ◽  
Xiu Juan Yang ◽  
Xiang Zhen Yan ◽  
Gen Sheng Li
Keyword(s):  
Failure Criterion ◽  
Rotation Speed ◽  
Drill String ◽  
Drilling Depth ◽  
Dynamic Reliability ◽  
Deep Well ◽  
Depth Direction ◽  
Deep Wells ◽  
Structure Strength ◽  
Well Depth

The first excursion failure criterion was introduced to calculate the dynamic reliability of drill string elements. Considering the random of geometry size and mechanical property parameters of drill string in deep & ultra-deep wells, the drill string system was dispersed into several basic elements according to the structure, strength and differences in the nature of formation rock in the well depth direction. And the overall dynamic reliability was quantitatively calculated through the serial theory. Through an example, the results show that the dynamic reliability of the drill string elements appeared fluctuation near the depth of 4500 meters for the inside worn of the drill string and casing, and uneven loading of drill string. The dynamic reliability of drill string in deep and complicated formation was less than any other drill strings. The drilling pressure, rotation speed and drilling depth were the main influencing factors on the dynamic reliability of drill string.

Model Free Adaptive Control for Thrust Cylinder of Water Well Drilling Rig

2020 ◽  
Author(s):  
Yao Wenlong ◽  
Qi Guanhua ◽  
Yang ke ◽  
Chi Ronghu ◽  
Yang Dejing
Keyword(s):  
Adaptive Control ◽  
Well Drilling ◽  
Drilling Rig ◽  
Model Free ◽  
Water Well

The Application of Mechanism Theory to a Textile Machinery Innovation

1976 ◽  
Vol 190 (1) ◽  
pp. 367-378 ◽  
Author(s):  
G. R. Wray
Keyword(s):  
High Speed ◽  
Practical Experience ◽  
Mechanism Analysis ◽  
The Novel ◽  
Traditional Practice ◽  
Textile Technology ◽  
Theoretical Investigations ◽  
Analysis And Synthesis ◽  
New Type ◽  
Machinery Manufacturing

The design of mechanisms for use in practical machinery applications is often of a trial-and-error nature based on traditional practice. Much emphasis has been given to the theory of mechanisms in recent years but this has yet to find wide practical application. This paper is a case study of how a basic idea, conceived by University-based inventors and intended to improve a slow method of making a textile pile fabric, became a reality in the form of a completely new type of high-speed textile machine for making an improved textile product, all within a time scale of four years. It also shows how recent University researches are further advancing its potential from both the machinery manufacturing and textile technology aspects. Step-by-step from the early experimental stages, it illustrates how the challenges of developing the novel mechanisms required for this unconventional machine and process were met by combining practical experience of traditional machinery design with theoretical investigations based on the new techniques of mechanism analysis and synthesis.

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