# US 2016/0258261 A1 · Pumping unit for oil drilling, with a movement control mechanism and a mobile body within a rotating head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0258261 A1 - Document ID: US20160258261A1 - Status: Published application - Kind: A1 - Application number: 14/638,632 - Filed: 2015-03-04 - Published: 2016-09-08 - Earliest claimed: 2015-03-04 - Assignees: Fresadora Sant'ana Ltda. - Applicants: Fresadora Sant'ana Ltda - Inventors: YASUAKI FUKUYAMA - Web page: https://patentgrep.com/patent/US20160258261A1 ## CPC - F04B 47/02: the driving mechanisms being situated at ground level (F04B47/12 takes precedence) - E21B 43/127: {Adaptations of walking-beam pump systems} - E21B 47/009: Monitoring of walking-beam pump systems - F04B 47/022: {driving of the walking beam} - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract This invention refers to a pumping unit for drilling oil in the field of oil prospecting equipment, comprising an oil well stem (120) which alters the length of said stem (120). The halter adjustment mechanism applied to a pumping unit for oil drilling comprises a fixed body (10) fitted with a peripheral support for fixing the steel cables (11) attached to the head (110) of the pumping unit (100). On the periphery of the fixed body (10) guides (12) are placed, wherein the peripheral support is displaced, a position sensor (121) being provided on the top end of such guide (12). The movement control mechanism of a mobile body within a rigid head of a pumping unit, which is the object of this invention, comprises equipment composed of a fixed portion (31) and a mobile portion (36). The fixed portion (31) comprises a reducer set (32), with a differential gear box (33) and the engine thereof (10) and a control system (38). The mobile portion (36) comprises a rotating head (35) over which a mobile body is attached (39), with a worm gear (37), a master gear (34), transfer gears (11), (12) and (13) and a movement system (14). ## Claims ### Claim at position 1 1- “PUMPING UNIT FOR OIL DRILLING” wherein an automatic adjustment mechanism adapted on the oil well stem (120) alters the stem length (120), decreasing or increasing same so as to set-off the shifting of the pumping course of the pumping unit (100), keeping the top of the stem (120) always in the same position, and avoiding the need to turn off the pumping unit (100) when this is fitted with automatic course regulation at each necessary shifting of the course; ### Claim at position 2 2- “PUMPING UNIT FOR OIL DRILLING” wherein the fixed body (10) is fitted with a peripheral support for fixing the steel cables (11) which are coupled to the head (110) of the pumping unit (100), where guides (12) are attached to the fixed body (10) periphery, where the peripheral support is displaced, a position sensor (121) being provided on the top end of said guide (12); ### Claim at position 3 3- “PUMPING UNIT FOR OIL DRILLING” wherein the telescopic mobile body (13) on the inner position of the fixed body has its course defined according to the movement of the pumping unit (PU) head (11), moving in the same proportion as the movement of such head (110), such mobile body (13) with movement driven by an electrical-hydraulic unit (20), so that, when the pumping course is shifted, an electronic system detects the new position that the mobile body (13) should reach (13) so as to set-off the movement, and drives the electrical-hydraulic unit (20) which commands movement of the mobile body (13) so that it causes displacement thereof until it reaches the desired position as identified by the position sensor (121). ### Claim at position 4 4- “PUMPING UNIT FOR OIL DRILLING” wherein the stem top (120) stays on the same point even when the head (110) descends due to a shifting of the course, with the automatic halter adjustment mechanism altering the length of the stem (120), so that the stem top (120) is always in the same position. ### Claim at position 5 5- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” comprising an equipment composed of a fixed portion (31) and a mobile portion (36), with the fixed portion (31) being composed of a reducer set (32), with a differential gear box (33) and its engine (40) and a control system (38), and the mobile portion (36) being composed of a rotating head (35) on which a mobile body is placed (39), a worm gear (37), a master gear (34), transfer gears (41), (42) and (43), and a movement system (44); ### Claim at position 6 (depends on 5) 6- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” according to claim 5, wherein the reducer (32) rotates the mobile portion (36) entirely on the axle (45), the gear (34) being fixed on the axle (45) and rotating together driving the differential (33) through the transfer gear (42), with the differential (33) transferring the rotation to the gear (41) which rotates in the same direction as the gear (42); ### Claim at position 7 (depends on 5) 7- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” according to claim 5, wherein the worm gear (37) is not fixed to the axle (45), but transfers the traction to the transfer gear (43) which, through the movement system (44) moves the mobile body (39), where, when the differential (33) engine (40) is turned off the master gear (34) and the worm gear (37) rotate at the same rate and in the same direction, and thus the gear (43) and the system (44) are not driven, and the mobile body (39) does not move on the rotating head (35); ### Claim at position 8 (depends on 5) 8- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” according to claim 5, wherein when the differential (33) engine (40) is not turned on, the mobile body (39) will not be displaced along the rotating head (35), with the mobile portion (36) either rotating or still; when the engine (40) is turned on, the gear (41) rotates at a different rate (42) causing the worm gear (37) to rotate at a different rate than the master gear (34), so that such rate difference moves the gear (43) which through the movement system (44) displaces the mobile body (39) along the rotating head (35). By inverting the direction of the engine (40) rotation the mobile body (39) will be displaced towards the opposite direction, so that such displacement takes place both when the mobile portion (36) is rotating and when it is still. ### Claim at position 9 (depends on 5) 9- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” according to claim 5, wherein the differential gear box (33) transfers the rotation of its engine (40) completely if the mobile portion (36) is still, however, if the mobile portion (36) is rotating driven by the reducer (32), the differential (33) sets-off the rotation of its engine (40) adding to or subtracting from the rotation of the mobile portion (36) so that the displacement of the mobile body (39) always takes place at the same rate, so that the differential (33) sets-off the rotation, receiving the rotation of the gear (42) that is being moved by the master gear (34). ### Claim at position 10 (depends on 5) 10- “MOVEMENT CONTROL MECHANISM OF A MOBILE BODY WITHIN A ROTATING HEAD” according to claim 5, wherein the control system (38) for recording the relative position of the mobile body (39) reports to the engine (40), when it is time to stop and the necessary rotation direction for achieving another desired position.