Abstract: A method 200, system and device for range finding are provided. The method 200 comprises determining 204 a first optical signature of a spool of optical fibre 16 wound in a winding pattern. The winding pattern comprises repeated changes in a winding parameter to provide a different optical response such that the first optical signature comprises a plurality of markers representing each change in the winding parameter. The method 200 further comprises despooling the fibre 16 from the spool; determining a second optical signature of the spool of optical fibre 16 after despooling the fibre 16 from the spool; and calculating 208 the length of despooled fibre based on a comparison of the first and the second optical signatures. The determined length may be used to determine a range of the spool of optical fibre 16 deployed in a wellbore.

Abstract: An apparatus and method for deploying an elongate medium in a bore is described. The apparatus includes a housing defining an internal spool cavity, and the housing is configured to be deployed in the bore. A spool of elongate medium is mounted within the spool cavity. The housing defines an outlet to permit the elongate medium to be deployed from the spool cavity, and an inlet to permit bore fluid to enter the housing during deployment of the elongate medium from the spool cavity. In use, the housing includes an isolating fluid to isolate the elongate medium from the bore fluid entering the housing. Also described is a kit for deploying elongate medium in a bore and a method of preparing an apparatus for deployment of an elongate medium in a bore.

Abstract: A well-based, groundwater delivery system provides a wireless control network that is used to report system performance via measured operational metrics. Such metrics facilitate monitoring of operational parameters associated with the well-based, groundwater delivery system and closed-loop control feedback to automatically implement measures to prevent damage. Sensors are used to measure volumes of water stored within the well-based, groundwater delivery system as well as water flow rates. Soft mounted sensors allow accurate measurements to be taken regardless of the mounting orientation of the sensor or the degree of plumb exhibited by water storage tanks of the well-based, groundwater delivery system. Automated status and control is established wirelessly via a base controller that may be accessed locally by a portable user device or accessed remotely via an external network.

Abstract: A through-bore spool apparatus for use in deploying multiple spoolable media in a bore is disclosed. The through-bore spool apparatus comprises a first spool comprising a first spool axis and a first spoolable medium wound around the first spool axis, and a second spool comprising a second spool axis and a second spoolable medium wound around the second spool axis. The first and second spoolable media are de-spoolable simultaneously from the respective first and second spools during movement of the through-bore spool apparatus along a bore.

Abstract: Disclosed herein is a pressure-relief mattress comprising: a plurality of inflatable bladders; a pressure sensor pad arranged to detect pressure exerted on a subject, the pressure sensor pad comprising a plurality of pressure sensor cells being arranged in a matrix with at least one row and at least one column; a pressure-sensing electronic unit electrically connected with the plurality of pressure sensor cells; and a pressure-control electronic unit communicatively connected with the pressure-sensing electronic unit; wherein the pressure-sensing electronic unit is configured for generating a measurement result indicative of a pressure exerted upon the subject at one or more of the pressure sensor cells, the pressure control electronic unit is configured for controlling operation of one or more of the inflatable bladders according to the pressure measurement result.

Abstract: A downhole optical communications system provided at a downhole location in use, the downhole communications system being for communicating between the downhole location and an uphole location, such as a surface location. The downhole optical communications system comprises a downhole optical transmitter configured to emit an optical signal for transmission over an optical transmission channel between the uphole location and the downhole optical transmitter; wherein the downhole optical transmitter is configured so as to produce a response to an optical signal received from the optical transmission channel and the downhole optical communications system is configured to determine data represented by the received optical signal from the response produced by the downhole optical transmitter.

Abstract: An apparatus and method for deploying an elongate medium in a bore is described. The apparatus includes a housing defining an internal spool cavity, and the housing is configured to be deployed in the bore. A spool of elongate medium is mounted within the spool cavity. The housing defines an outlet to permit the elongate medium to be deployed from the spool cavity, and an inlet to permit bore fluid to enter the housing during deployment of the elongate medium from the spool cavity. In use, the housing includes an isolating fluid to isolate the elongate medium from the bore fluid entering the housing. Also described is a kit for deploying elongate medium in a bore and a method of preparing an apparatus for deployment of an elongate medium in a bore.

Abstract: A downhole optical communications system provided at a downhole location in use, the downhole communications system being for communicating between the downhole location and an uphole location, such as a surface location. The downhole optical communications system comprises a downhole optical transmitter configured to emit an optical signal for transmission over an optical transmission channel between the uphole location and the downhole optical transmitter; wherein the downhole optical transmitter is configured so as to produce a response to an optical signal received from the optical transmission channel and the downhole optical communications system is configured to determine data represented by the received optical signal from the response produced by the downhole optical transmitter.

Abstract: A dry diffuser is disclosed which avoids safety and transport issues typical of liquid diffusers, candles and wax melts and provides systematic controlled diffusion of fragrance (or other active material) over relatively long periods with a programmable user interface.

Abstract: An improved USB charging apparatus includes a main body and a plurality of power processing modules arranged in the main body; each one of the power processing modules having two USB charging ports connected thereto, and the two USB charging ports configured to be a first charging port and a second charging port having specifications different from each other; the first charging port and the second charging port arranged adjacent to each other; each one of the power processing modules further comprising a detection control circuit and a switch circuit, allowing each charging circuit to be provided with the charging ports of two types of specifications, such that user can choose one of the charging ports for use depending upon the actual needs. Accordingly, the improved USB charging apparatus is not limited to certain specifications of charging ports only, thereby increasing the use significantly.

Abstract: A through-bore spool apparatus for use in deploying multiple spoolable media in a bore is disclosed. The through-bore spool apparatus comprises a first spool comprising a first spool axis and a first spoolable medium wound around the first spool axis, and a second spool comprising a second spool axis and a second spoolable medium wound around the second spool axis. The first and second spoolable media are de-spoolable simultaneously from the respective first and second spools during movement of the through-bore spool apparatus along a bore.

Abstract: A through-bore spool apparatus for use in deploying multiple spoolable media in a bore is disclosed. The through-bore spool apparatus comprises a first spool comprising a first spool axis and a first spoolable medium wound around the first spool axis, and a second spool comprising a second spool axis and a second spoolable medium wound around the second spool axis. The first and second spoolable media are de-spoolable simultaneously from the respective first and second spools during movement of the through-bore spool apparatus along a bore.

Abstract: An improved USB charging apparatus includes a main body and a plurality of power processing modules arranged in the main body; each one of the power processing modules having two USB charging ports connected thereto, and the two USB charging ports configured to be a first charging port and a second charging port having specifications different from each other; the first charging port and the second charging port arranged adjacent to each other; each one of the power processing modules further comprising a detection control circuit and a switch circuit, allowing each charging circuit to be provided with the charging ports of two types of specifications, such that user can choose one of the charging ports for use depending upon the actual needs. Accordingly, the improved USB charging apparatus is not limited to certain specifications of charging ports only, thereby increasing the use significantly.

Abstract: A downhole optical communications system provided at a downhole location in use, the downhole communications system being for communicating between the downhole location and an uphole location, such as a surface location. The downhole optical communications system comprises a downhole optical transmitter configured to emit an optical signal for transmission over an optical transmission channel between the uphole location and the downhole optical transmitter; wherein the downhole optical transmitter is configured so as to produce a response to an optical signal received from the optical transmission channel and the downhole optical communications system is configured to determine data represented by the received optical signal from the response produced by the downhole optical transmitter.

Abstract: A deployable device including a deployable member. The deployable member includes an optical fibre. The deployable member is stowed at the device in a first wound configuration and arranged to be deployed from the device to a second unwound configuration within a well. In examples, the deployable device is configured such that, when unwound, the deployable member has a propensity to adhere to a wall within the well. In examples, the deployable member includes at least a first length and second length, the first and second lengths having different mechanical properties.

Abstract: A spool of optical fibre comprises a spool axis and a length of optical fibre wound around the spool axis to form a plurality of wrap segments arranged axially along the spool axis, wherein adjacent wrap segments partially overlap in the axial direction. Each wrap segment comprises a first wrap layer wound in a first axial direction over a first axial distance, and a second wrap layer wound over the first wrap layer in a reverse second axial direction over a second axial distance greater than the first axial distance, the optical fibre extending from the second wrap layer of one wrap segment to the first wrap layer of an adjacent wrap segment. The spool may be mounted in a device such that the optical fibre can be despooled and deployed from the device.

Abstract: A dry diffuser is disclosed which avoids safety and transport issues typical of liquid diffusers, candles and wax melts and provides systematic controlled diffusion of fragrance (or other active material) over relatively long periods with a programmable user interface.

Abstract: Disclosed herein is a pressure-relief mattress comprising: a plurality of inflatable bladders; a pressure sensor pad arranged to detect pressure exerted on a subject, the pressure sensor pad comprising a plurality of pressure sensor cells being arranged in a matrix with at least one row and at least one column; a pressure-sensing electronic unit electrically connected with the plurality of pressure sensor cells; and a pressure-control electronic unit communicatively connected with the pressure-sensing electronic unit; wherein the pressure-sensing electronic unit is configured for generating a measurement result indicative of a pressure exerted upon the subject at one or more of the pressure sensor cells, the pressure control electronic unit is configured for controlling operation of one or more of the inflatable bladders according to the pressure measurement result.

Abstract: A through-bore spool apparatus for use in deploying multiple spoolable media in a bore is disclosed. The through-bore spool apparatus comprises a first spool comprising a first spool axis and a first spoolable medium wound around the first spool axis, and a second spool comprising a second spool axis and a second spoolable medium wound around the second spool axis. The first and second spoolable media are de-spoolable simultaneously from the respective first and second spools during movement of the through-bore spool apparatus along a bore.

Abstract: A spool of optical fibre comprises a spool axis and a length of optical fibre wound around the spool axis to form a plurality of wrap segments arranged axially along the spool axis, wherein adjacent wrap segments partially overlap in the axial direction. Each wrap segment comprises a first wrap layer wound in a first axial direction over a first axial distance, and a second wrap layer wound over the first wrap layer in a reverse second axial direction over a second axial distance greater than the first axial distance, the optical fibre extending from the second wrap layer of one wrap segment to the first wrap layer of an adjacent wrap segment. The spool may be mounted in a device such that the optical fibre can be despooled and deployed from the device.