The invention provides a sensing optical cable for synchronously monitoring the
temperature and pressure in
oil well tubing in a distribution mode, which comprises a high-strength heat-resistant
corrosion-resistant material layer which is divided into an outer protective buffer layer and an inner protective buffer layer by a
metal steel strip, wherein a first heat-resistant armored loose tube
optical fiber, a second heat-resistant armored loose tube
optical fiber and a heat-resistant
corrosion-resistant tight tube
optical fiber are distributed in the Chinese character of 'Pin' in the inner protective buffer layer;
metal strengthened cores are respectively arranged in the middle parts of the first heat-resistant armored loose tube optical
fiber, the second heat-resistant armored loose tubeoptical
fiber and the heat-resistant
corrosion-resistant tight tube optical
fiber; and a heat-resistant singlemode optical fiber is arranged in the first heat-resistant armored loose tube optical fiber, a heat-resistant multimode optical fiber is arranged in the second heat-resistant armored loose tube optical fiber, and a heat-resistant singlemode optical fiber is arranged in the heat-resistant corrosion-resistant tight tube optical fiber. The sensing optical cable designed by the invention has the advantages of higher accuracy of finally-obtained pressure value, higher
heat resistance and corrosion resistance, high
mechanical strength, high safety and unified lattice performance and is convenient to manufacture and construct.