Abstract:
Технической задачей заявляемого изобретения является повышение износостойкости замковых соединений бурильных труб. Предложена бурильная труба, состоящая из тела трубы с высаженными концами и соединёнными с ними сваркой трением резьбовыми соединительными замковыми деталями (замками), имеющими коническую резьбу и двухслойное покрытие, первый слой которого нанесён методом термодиффузионного порошкового цинкования, а второй -методом фосфатирования. Повышение ресурса замкового соединения по сравнению с соединениями, имеющими только фосфатное покрытие, позволяет не предусматривать в замковых деталях запаса металла на ремонт, что экономит до нескольких килограммов металла на одно замковое соединение, снижая тем самым, массу буровых колонн на несколько тонн. С целью повышения долговечности замков и надёжности сварных соединений толщину δ первого слоя покрытия в зависимости от конусности резьбы К устанавливают согласно соотношению: δ = 0,09... 0,1ЗК. На участке протяжённостью 15-25 мм от места сварки на замках имеется только фосфатное покрытие.
Abstract:
Disclosed are a device and a method for securing an object (2), particularly a pipe, which has an external thread (3) and can be screwed into a sleeve-type element (1) that has a complementary internal thread (6), against being unscrewed. According to the invention, the object (2) that is to be screwed into the sleeve-type element (1) comprises at least one depression or profiled section at the forward end thereof which faces the sleeve-type element. Said depression or profiled section has a shape that deviates from the thread (3) and especially extends parallel to the longitudinal axis (12) of the object (2). The depression cooperates with at least one element that has a complementary elevation or profiled section (9) and is freely rotatable within the sleeve-type element (1) when the object is screwed in. The freely rotatable element (8) adjoins the subarea (7) of the sleeve-type element (1) that is provided with the internal thread (6) or an additional element which rests inside or on the subarea (7) that is provided with the internal thread (6). The freely rotatable element (8) and the adjoining subarea (7) of the sleeve-type element (1) or the additional element have one respective stop face (13, 15, 14, 16) which cooperate with one another when the object (2) is rotated in the unscrewing direction and prevent the object (2) from being further unscrewed by having the at least one complementary elevation and depression (9) engage with each other in order to reliably secure the object against being unscrewed.
Abstract:
Eine Vorrichtung zum lösbaren Verbinden einer Bohrkrone (2) mit einem Bohrgestänge (3) umfasst einen Adapter (5), welcher an einem der Bohrkrone (2) abgewandten Ende (6) mit dem Bohrgestänge (3) verbindbar oder mit einem Bohrgestängeende (8) integral ausgebildet ist. An einem der Bohrkrone (2) zugewandten Ende (7) des Adapters (5) ist eine an einer Außenfläche des Adapters (5) umlaufende schraubenförmige Nut (17) vorgesehen, welche mit einem in einer Ausnehmung (10) der Bohrkrone (2) zur Aufnahme des Adapters (5) angeordneten Kopplungselement (15) in und außer Eingriff bringbar ist, wobei das Kopplungselement (15) ebenfalls schraubenförmig und als separater Bauteil in die Ausnehmung (10) der Bohrkrone (2) einsetzbar ist.
Abstract:
A threaded connector includes a base and a threaded male portion projecting axially outward from the base. The threaded male portion is adapted to mate with an associated threaded female socket. The threaded male portion includes a helical thread comprising three sections: (I) a lead-in section; (N) a transitional cam-locking section; and, (Hi) a friction-locking section. The friction-locking section is located adjacent the base, the lead-in section Is spaced from the base, and the transitional cam-locking section connects the lead-in section to the friction-locking section. The helical thread includes a tip and a root. The lead-in section is defined by a first major diameter at the tip of said thread and the friction-locking section is defined by a second major diameter at the tip of the thread. The second major diameter is greater than the first major diameter.
Abstract:
The present invention provides a connector arrangement for connecting a first tubular to a second tubular. In particular, the present invention relates to a method for connecting tubulars in such a way that the connection is prevented from becoming unmade in response to expansion of the tubulars in a wellbore. More particularly, the present invention provides a tubular connection using a helical or spiral thread insert to seal and maintain mechanical strength in a tubular connection after expansion.
Abstract:
A combination mechanical and metallurgical connection is provided for joining members such as conduits (10, 20) wherein amorphous diffusion bonding material (40) is placed at mating or abutting surfaces (34, 36) in the mechanical joint, the bonding material is compressed under pressure and heat is applied to cause the bonding material to diffuse into the mechanical connection.
Abstract:
A corrosion-resistant threaded connection including a first tubular member having an outer metal tube (12) of corrosion-prone material and an inner metal lining (38) of corrosion-resistant material, the first tubular member (12) forming a pin connection (12a) having a nose portion comprising a ring (40) of corrosion-resistant material secured, e.g., welded (42), to the tube (12) of corrosion-prone material, a radially outwardly facing, annularly extending thread-free first pin shoulder (44) being formed on the corrosion-resistant ring, the first member including an externally threaded portion (48) providing male threads, and a second tubular member (14) comprising a metal coupling having a first end (16) and a second end (20) and forming a first box connection and a second box connection, respectively, the coupling including an internally disposed annularly extending metal section of corrosion-resistant material (24) disposed intermediate the ends (16, 20) of the coupling, each of the box connections comprising a radially inwardly facing annularly extending box shoulder (28) formed on the section of corrosion-resistant material (24).
Abstract:
Elément fileté tubulaire (1, 2) pour le forage, l'exploitation des puits hydrocarbures, le transport de pétrole et de gaz, le transport ou le stockage d'hydrogène, la captation carbone ou la géothermie, comprenant un corps métallique (5) et au moins une extrémité filetée (3, 4) comprenant au moins une portion filetée (14,15), ladite extrémité filetée (3, 4) comprenant un revêtement multicouche (10) sur au moins une portion de la surface de l'extrémité filetée (3,4) caractérisé en ce que ledit revêtement multicouche (10) comprend une première couche (11) comprenant un revêtement solide comprenant du Zinc-Nickel électrodéposé sur ladite au moins une portion de la surface de l'extrémité filetée (3, 4), une seconde couche (12) de conversion de type oxalatation au-dessus de la première couche (11), une troisième couche (13) comprenant une matrice polyuréthane ou époxy chargée en particules solides lubrifiantes au-dessus de la seconde couche (12).
Abstract:
A system for blocking rotation between a first tubular (102) and a second tubular (104) includes a key (202) positioned within a recess (204) formed in the first tubular (102). The system also includes a retention fastener (206) arranged within an elongated aperture (210) extending through the key (202). The system further includes an installation fastener (208) moving the key (202) from a storage configuration when in a first position to an engaged configuration when in a second position. The system also includes teeth (214) arranged along a bottom portion of the key (202), proximate the second tubular (104), the teeth (214) engaging the second tubular (104) via rotation of the key (202) about the retention fastener (206) and blocking rotation of the first tubular (102) relative to the second tubular (104) in a first direction (702).