Abstract: Method for ordering computer software procedures in an order using a computing machine for modeling each of multiple blocks of a block diagram. The block diagram is capable of having at least one feedback loop. Each block corresponds to a software procedure for performing at least one function and has at least one input or at least one output. The block diagram has interconnections between such inputs and outputs of such blocks forming a block diagram. A list of inputs for each of such blocks is generated; a list of outputs for each of such blocks is generated; a feed-through list for each of at least some of such outputs of such blocks is generated. Each feed-through list has a list of any input which directly affects the output of the same block. The input, output and feed-through lists are machine processed for ordering of such procedures in the order during modeling.

Abstract: An apparatus and/or method using an automatic program generation computer for generation of a computer program which represents a functional system on a display. A system has a plurality of interactively connected functionality blocks which form a block diagram and typically, the block diagram has one or more feedback loops. Each of the blocks has at least one input, at least some of the blocks have at least one input functionally defined by and connected to at least one of the outputs. At least one of the blocks is a state block whose operation at one time is dependent on the condition of at least one input for the state block at a prior time. A stored update state procedure is provided corresponding to the state block defining the state as a function of at least one of the inputs to the state block. At least one stored update output procedure is provided and corresponds to each of the blocks for defining at least one of the outputs of a block.

Abstract: An apparatus for protecting a wireline at a top of a well from wear due to flow of fluid about the wireline includes a valve assembly coupled to a wellhead for introducing fluid into a well. A wireline adaptor section passes the wireline from outside the well and adaptor section into the well through the wellhead. The wireline adaptor section includes a hollow rigid tube passing from the wireline adaptor section into a flow passage for the fluid and has an end extending away from the adaptor section. A flexible bushing is coupled to an extends beyond the end of the tube in a direction toward the wellhead. A wireline is slidable from the outside of the adaptor section the tube and bushing and out the end of the tube.

Abstract: Method and apparatus for transmitting data uphole in a well to the top of the well. A string of electrically conductive tubing and a tool connected to the tubing are lowered down the well along the inside of tubular shaped electrically conductive casing for the well. The inside of the casing is electrically contacted with an electrical contact carried by the tool. A switch in the tool is operated for alternately electrically connecting and disconnecting the contact and thereby the casing and with respect to the conductive tubing for changing the electrical conductance between the tubing and the casing representative of data. The changing conductance is interrogated with an alternating current, formed at the top of the well, to recover the data.

Abstract: A method and means is provided for receiving and passing data up hole to the top (22) of a well bore (20a) while passing fracturing fluid (54,60) down hole to a geological formation (44) at a zone (29) in the well bore. A flexible line (36) has suspended thereform, a receiver (34) for receiving data signals from a separate sensor (30) and transmitter (28), and a stiffener (32). The stiffener is positioned up the well bore from a lower extremity (29b) of the receiver. The flexible line is adapted for passing data signals representing a parameter represented by the received data signals up to the top (22) of the well bore.

Abstract: A tool with a switch is inserted and moved down the inside of tubular-shaped and electrically conductive casing in the well. Spaced apart contacts on the tool are connected between upper and lower electrically conductive casings located on opposite sides of a high impedance separation in the casing. The switch is operated for creating a changing electrical conductance between the upper and lower casings representative of data. The electrical conductance across the high impedance separation is interrogated with an alternating current signal to retrieve the data.

Abstract: Method and an arrangement are disclosed for recovery of data signals representing a parameter from down hole to the top of a well bore (20a). The well bore has conductive fluid (54,60) and the data signals represent a parameter down hole in the well bore. An exposed electrode receiver (34 ) is lowered in the well bore suspended from a flexible line (36) while the line extends to the top of the well bore. Electrical potentials representing the parameters are received by the receiver from the conductive fluid. Data signals representing the parameter represented by the received potentials are passed over the flexible line to the top of the well bore.

Abstract: Method and apparatus are disclosed for recovery of data in an oil or gas well having a well bore (20a) for passing fluid (54), transversely across a side (29a-29b) of the well bore, at a down hole location (29a-29b ) of the well bore and longitudinally in the well bore, between a geological formation (44) located at the down hole location and a top portion (22) of the well bore. A sensor (30) senses, substantially at the down hole location, a parameter of the fluid. A transmitter (28) transmits into the well bore, data signals which represent the sensed parameter. A receiver (34) and a flexible line (36) are lowered in the well bore separate from the sensor and transmitter, while the receiver is suspended from the flexible line. The data signals from the transmitter are received with the receiver. Data signals, which represent the parameter, which is represented by the received data signals, are passed over the flexible line to the top portion of the well bore.

Abstract: The method uses a tubular shaped and electrically conductive well casing that extends to a geological formation in an oil or gas well. The casing is used for both flowing fluid between the formation and the casing at the top of the well and for communicating data representative of a parameter in the well to the casing at the top of the wall. A tool carrying a switch and an electrical contact is inserted down the inside of the casing. The contact on the tool is connected to the inside of the casing. The flow of the fluid between the geological formation and the casing at the top of the well through the side of the casing above the tool is controlled. A parameter in the well adjacent the formation is sensed. The switch in the tool is operated for sequentially connecting together and disconnecting the contact to a return electrical path to the top of the well for causing changes in the conductance between the casing and the return path representative of data about the parameter.

Abstract: A tool changes the electrical conductance across a nonconductive separation in a string of electrically conductive casing in a well located in the earth. The tool is for transmission of data up the well. The casing has at least one inwardly extending landing shoulder for the tool. The tool has a housing elongated between first and second ends. The housing has a first contact for electrical connection to the casing on one side of the nonconductive separation. The housing has a second contact spaced from the first contact for electrical connection to the casing on the other side of the nonconductive separation from the one side. The housing also has a nonconductive housing portion, substantially circular in cross-section, between the first and second contacts. An outwardly extending landing shoulder is provided on the housing for landing and for supporting the tool on the casing landing shoulder.