SU821680A1

SU821680A1 - Drill string stabilizer

Info

Publication number: SU821680A1
Application number: SU762345878A
Authority: SU
Inventors: Лев Аншелевич Резник; Михаил Самуилович Савич; Даниил Абрамович Гуревич; Ефим Наумович Улицкий; Владимир Константинович Зинченко; Николай Тимофеевич Корсаков
Original assignee: Предприятие П/Я Р-6767
Priority date: 1976-04-09
Filing date: 1976-04-09
Publication date: 1981-04-15

Description

Изобретение относитс к области горнодобывающей и нефтегазовой промышленности и предназначено дл оснащени буровых колонн буровых станков с целью снижени вибрации, увеличени стойкости бурового инструмента, за-, щиты от потери устойчивости бурового става, уменьшени искривлени и защиты от увода бурового инструмента.The invention relates to the field of the mining and oil and gas industry and is intended to equip drill strings of drilling rigs in order to reduce vibration, increase the durability of the drilling tool, protect against buckling of the drill rod, reduce bending and protect against drainage of the drill tool.

Известен стабилизатор, включающий две широкие (по всей длине стабилизатора .) скобы (полуобечайки) с проушинами. Скобы соедин ютс двум чеками, одна из которых вл етс шарниром, а втора - замковой. Скобы оснащены центрирующими зубь ми . .Known stabilizer, including two wide (along the entire length of the stabilizer.) Bracket (semi-sheath) with eyelets. The brackets are connected by two checks, one of which is a hinge, and the second is a lock. Staples are equipped with centering teeth. .

Недостаток данной конструкции заключаетс в том, что стабилизатор не может передавать крут щий люмент от штанги. Наличие выдвижной чеки значительно увеличивает монтажный габарит стабилизатора, что значительно усложн ет операции по его сборке - разборке в стесненном пространстве между почвой и платформой станка.The disadvantage of this design is that the stabilizer cannot transfer a torque lumen from the rod. The presence of retractable checks significantly increases the mounting dimension of the stabilizer, which greatly complicates its assembly and disassembly operations in the cramped space between the soil and the machine platform.

Известен стабилизатор буровой колонны , устанавливаег ий в проточке Known stabilizer drill string, installed in the groove

штанги и содержащий две пблуобечайки со ступенчатыми взаимностыковочными поверхност ми и фиксирующим соединительным элементом, выполненным в виде штыр 2 .rods and containing two parallel blades with stepped interlocking surfaces and a locking connecting element made in the form of a pin 2.

Недостаток конструкции заключаетс в том, что монтаж стабилизатора требует значительных усилий; также не обеспечиваютс Достаточна надежность работы и передача KpyTHDiero момента. ,The disadvantage of the design is that the installation of the stabilizer requires considerable effort; also, there is no sufficient reliability of operation and the transmission of torque to the KpyTHDiero. ,

Цель изобретени - повышение надежности работы и упрощение монтажа - демонтажа.The purpose of the invention is to improve the reliability of work and simplify installation - disassembly.

Поставленна цель достигаетс тем что взаимностыковочные поверхности полуобечаек выполнены Z-образной формы, а соединительный фиксирующий элемент выполнен в виде замковой скобы и размещен между торцами стабилизатора и проточки штанги, причем сопр гающиес поверхно.сти штанги и стабилизатора выполнены некруглой формы.The goal is achieved by the fact that the mutually joining surfaces of the half-walls are made Z-shaped, and the connecting locking element is designed as a locking bracket and is placed between the ends of the stabilizer and the groove of the rod, and the mating surface of the rod and the stabilizer are non-circular in shape.

Claims

FIG. 1 shows a proposed drill string stabilizer mounted on a drill rod; in fig. 2 is the same, section A-A in FIG. 1 in FIG. 3 is a section BB in FIG. one; in fig. 4 - half stabilizer stabilizer; in fig. 5 is a sectional view BB in FIG. 1. Locking clip in position locking the semi-shanks of the stabilizer); in fig. 6 is a view along arrow G in FIG. 4. The drill string stabilizer consists of two half sides 1 and 2 and a lock bracket 3. The half shells are made with Z-shaped intersecting dots 4, and the half-heads of one half-arm correspond to the depression 6 of the other. The inner part of the protrusions 5 of the half-shells is made in the form of plane-parallel cheeks 7. The semi-shells are equipped with longitudinal centering teeth 8, which are arranged along forming or in the form of spiral winding. When assembling the half-shells, the segments of the teeth coincide to form common lines. The space 9 between the teeth serves to discharge the cut-off sludge. The teeth of the half-shells can be equipped with carbide pins 10. The half-shells of the stabilizer are installed on the rods 11 of the drill rod in the bore 12 having flats 13. A fixed stop 14 is also installed on the bar in the groove . ToJVdin of the castle bracket must be at least the height of the protrusion 5 of the half-shell. The installation of the stabilizer on the rod is as follows. Initially, a half-shell is installed in the groove 12 of the rod 11. In this case, the plane-parallel cheeks 7 of the semi-barrier cover the faces of the 13 rod, which makes it possible to firmly fix the half-barrier on the rod and transfer torque to it. Since the length of the groove 12 is greater than the height of the half-shell by the thickness of the bracket (height h of the protrusion 5 of the half-shell),. When installing the half-shell 2 into the groove of the rod, the projections 5 of both sides of the shells pass one by one. Then, when the half-shell 2 is displaced downward, the protrusions 5 enter the corresponding depressions 6. The half-arm 2 is also made with plane-mounted vanes, which are stimulated with the flats of one bar. After assembling, the 12 trousers that form the gap between the end of the groove and the ends of the half-walls 1 and 2 insert the lock bracket 3 and turn it counter-clockwise to the stop 14 (during drilling, the drilling rig: rotates clockwise). Due to this, during the drilling of the castle, the clamp remains permanently locked. In addition, since the outer diameter of the staple is smaller than the diameter of the stabilizer, it is affected by: a well machine. This protects the bracket from reversal and exit from the socket when accidental or short-term reversal of the drill rod (for example, when screwing the rods). The disassembling of the stabilizer is performed in the opposite direction of the cheek. The proposed stabilizer, due to the combination of ease of assembly and disassembly operations and torque transfer from the rod, can be used on domestic drilling machines of the SVS-200 and SVS-250 types (as well as on a number of foreign machines). This will reduce the vibration of the drill rod, which will lead to an increase in the durability of the bit and the traveling speed of penetration, which is constrained by the growth of vibration. . Claim 1. A drill string stabilizer installed in a rod bore and containing two half barrels with stepped mutually connecting surfaces and a locking connecting element, characterized in that, in order to increase reliability and simplify installation and disassembly, the mutually bridging surfaces of the half blades are made Z-shaped, and the connecting locking element is designed as a locking bracket and is placed between the ends of the stabilizer and the groove of the rod. 2. A stabilizer according to claim 1, characterized in that the supporting surfaces of the rod and the stabilizer are of a non-circular shape. Sources of information taken into account in the examination 1. US patent 3164216, cl. 175-323, published. 1969.

2. Bakulin V. m. Tread protection of pipes when drilling deep wells in the United States. M., VNIIOENT, 1972, p.68, Fig. 29 (prototype).