Orientation apparatus and hole finder device for a wireline logging tool string

11371,306

16/801901

February 26, 2020

The disclosure relates to a carriage apparatus for carrying a tool string down a wellbore in a wireline logging, and an orientation apparatus and hole finder device for a wireline logging tool string. In some embodiments the carriage includes a protection structure which extends longitudinally around a wheel of the apparatus to thereby prevent a side of the wheel from contacting a wall of the wellbore. In some embodiments an orientation apparatus and hole finder are arranged so that the orientation apparatus orientates the hole finder device in the wellbore so that a tip of a nose section of the hole finder is elevated above a low side of the wellbore by a height and offset from and above a longitudinal axis of the tool string.

PETROMAC IP LIMITED (Auckland, NZ)

PETROMAC IP LIMITED (Auckland, NZ)

1. A sensor transportation apparatus to convey an elongate sensor assembly through a wellbore, the sensor transportation apparatus comprising: at least one engagement structure to connect the sensor transportation apparatus to the sensor assembly, and a pair of skids, and an orientation structure comprising at least three orientation projections, the orientation structure defining a form having a transverse outline which has a rotational centre, wherein the rotational centre is offset from a centre of mass of the elongate sensor assembly so that, in use, the sensor transportation apparatus is oriented in a most stable position with the centre of mass of the elongate sensor assembly below the rotational centre and with the pair of skids oriented to slide along a low side of the wellbore.

2. The sensor transportation apparatus as claimed in claim 1 wherein lateral extremities of the orientation structure on each side of a vertical centreline of the apparatus substantially lie on a substantially circular curve.

3. The sensor transportation apparatus as claimed in claim 1 , wherein the pair of skids are formed from a ceramic material or a plastic or elastomer material.

4. The sensor transportation apparatus as claimed in claim 1 , wherein the orientation structure comprises the pair of skids.

5. The sensor transportation apparatus as claimed in claim 4 , wherein each skid is a said orientation projection.

6. The sensor transportation apparatus as claimed in claim 1 , wherein the orientation projections act to destabilise the position of the elongate sensor assembly if placed in contact with the low side of the wellbore causing the elongate sensor assembly to rotate about a longitudinal axis of the elongate sensor assembly to an orientation placing the pair of skids in contact with the low side wall of the wellbore.

7. The sensor transportation apparatus as claimed in claim 1 , wherein lateral extremities of the orientation projections define sections of a perimeter of a substantially circular curve centred on the rotational centre.

8. The sensor transportation apparatus as claimed in claim 1 , wherein lateral extremities of the pair of skids and the orientation projections together define a curve extending circumferentially around a portion of the circumference of the elongate sensor assembly when the sensor transportation apparatus is connected to the elongate sensor assembly.

9. The sensor transportation apparatus as claimed in claim 8 , wherein the lateral extremities of the pair of skids and the orientation projections are curved lateral extremities, each curved lateral extremity extending circumferentially, partially around the circumference of the elongate sensor assembly.

10. The sensor transportation apparatus as claimed in claim 8 , wherein the lateral extremities of the pair of skids and/or the orientation projections are curved lateral extremities, each curved lateral extremity extending circumferentially, partially around the circumference of the elongate sensor assembly.

11. The sensor transportation apparatus as claimed in claim 10 , wherein a curvature of the curved lateral extremities of each skid of the pair of skids conforms to a curvature of a wall of the wellbore.

12. The sensor transportation apparatus as claimed in claim 8 , wherein the curve extending circumferentially around the portion of the circumference of the elongate sensor assembly extends a radial distance from the central axis of the elongate sensor assembly, and wherein the radial distance progressively decreases from a central orientation projection to each skid of the pair of skids.

13. The sensor transportation apparatus as claimed in claim 1 , wherein the pair of skids is arranged to have a greater spacing between the pair of skids than a spacing between the orientation projections.

14. The sensor transportation apparatus as claimed in claim 1 , wherein the pair of skids are positioned between 30° and 45° from a vertical plane through a longitudinal axis of the sensor assembly.

15. The sensor transportation apparatus as claimed in claim 1 , wherein the engagement structure is adapted to engage an exterior surface of the elongate sensor assembly.

16. The sensor transportation apparatus as claimed in claim 1 , wherein the engagement structure partially encloses the exterior surface of the sensor assembly without completely encircling the sensor assembly, or wherein the engagement structure is adapted for in-line connection to the sensor assembly.

17. The sensor transportation apparatus as claimed in claim 1 further comprising a guide device, the guide device comprising: a base adapted to engage an end of the elongate sensor assembly and a nose section having a tip which is offset from the longitudinal axis of the elongate sensor assembly when the guide device is engaged with said elongate sensor assembly.

18. The sensor transportation apparatus as claimed in claim 17 , wherein with the sensor transportation apparatus in the most stable position, an upward inclination of the nose section ensures the tip is elevated above the low side of the wellbore and is offset from and above the longitudinal axis of the elongate sensor assembly.

19. The sensor transportation apparatus as claimed in claim 17 , wherein the nose section is arranged to project from the base at a fixed angle to a longitudinal axis of the elongate sensor assembly when the guide device is engaged with the elongate sensor assembly.

20. The sensor transportation apparatus as claimed in claim 1 , wherein the elongate sensor assembly comprises a sampling tool oriented to take a sample from a high-side of the wellbore with the sensor transportation apparatus in the most stable position.

21. A guide device for guiding an elongate sensor assembly through a wellbore, the guide device comprising: a pair of skids, an orientation structure comprising at least three orientation projections, and a nose section with a base attached to the orientation structure, the nose section having a tip which is offset from the longitudinal axis of the elongate sensor assembly when the guide device is engaged with the elongate sensor assembly, wherein the orientation structure defines a form having a transverse outline which has a rotational centre, wherein the rotational centre is offset from a centre of mass of the elongate sensor assembly so that, in use, the elongate sensor assembly is oriented in a most stable position with the centre of mass of the elongate sensor assembly below the rotational centre and with the pair of skids oriented to slide along a low side of the wellbore, and with the tip of the nose section offset above the low side of the wellbore.

22. The guide device as claimed in claim 21 , wherein with the sensor transportation apparatus in the most stable position, an upward inclination of the nose section ensures the tip is elevated above the low side of the wellbore and is offset from and above the longitudinal axis of the elongate sensor assembly.

23. The sensor transportation apparatus as claimed in claim 21 , wherein the orientation structure comprises the pair of skids and each skid is a said orientation projection.

684732 October 1901 Villard
2931440 April 1960 Lebourg
2971582 February 1961 Marsh
3165156 January 1965 Kokesh
3396799 August 1968 Anderson et al.
3603264 September 1971 Von Arx
4171031 October 1979 Marquis
4415030 November 1983 Walkow et al.
4438810 March 1984 Wilkinson
4474235 October 1984 Coshow
4595055 June 1986 Vannier
4624313 November 1986 Coshow
4771830 September 1988 Peate
5111891 May 1992 Kinnan
5322391 June 1994 Fisk et al.
5355950 October 1994 Zwart
5797453 August 1998 Hisaw
6002257 December 1999 Thomas et al.
6116337 September 2000 Civarolo et al.
6209667 April 2001 Murray et al.
6260178 July 2001 Baugh et al.
6378627 April 2002 Tubel
6536531 March 2003 Brunet
6779598 August 2004 Hall
7395881 July 2008 McKay et al.
7757782 July 2010 Tashiro et al.
7866384 January 2011 Hall
8011429 September 2011 McNay
9863198 January 2018 McCormick
10364627 July 2019 McCormick
2003/0075321 April 2003 Hall
2005/0252655 November 2005 McKay
2009/0145596 June 2009 Hansen et al.
2009/0301709 December 2009 Cooper
2011/0277990 November 2011 Kotsonis
2012/0018145 January 2012 Wheater et al.
2012/0061098 March 2012 Hall
2012/0152523 June 2012 Hofman
2012/0222857 September 2012 McNay
2013/0248208 September 2013 Copold et al.
1605709 April 2005
2864066 January 2007
2016/35725 November 2010
2898635 September 2007
2483227 March 2012
WO 1994/005941 March 1994
WO 1999/053172 October 1999
WO 2001/040615 June 2001
WO 2005/116387 December 2005
WO 2010/043881 April 2010
WO 2010/106312 September 2010
WO 2010/141028 December 2010
WO 2013/067255 May 2013

Marwaha, Sachin, International Search Report of the International Search Authority, dated Mar. 19, 2014, 7 pages, PCT/NZ2013/000210, PCT/ISA Australian Patent Office. cited by applicant
Marwaha, Sachin, Written Opinion of the International Search Authority, dated Mar. 19, 2014, 10 pages, PCT/NZ2013/000210, PCT/I SA Australian Patent Office. cited by applicant
Maukonen, Kalle, Supplementary European Search Report, dated Oct. 19, 2016, 10 pages, European Patent Office. cited by applicant
Maukonen, Kalle, European Examination Report, dated Dec. 11, 2018, 7 pages. cited by applicant

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